JPS642662B2 - - Google Patents
Info
- Publication number
- JPS642662B2 JPS642662B2 JP20602986A JP20602986A JPS642662B2 JP S642662 B2 JPS642662 B2 JP S642662B2 JP 20602986 A JP20602986 A JP 20602986A JP 20602986 A JP20602986 A JP 20602986A JP S642662 B2 JPS642662 B2 JP S642662B2
- Authority
- JP
- Japan
- Prior art keywords
- corrosion resistance
- titanium
- workability
- present
- alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005260 corrosion Methods 0.000 claims description 29
- 230000007797 corrosion Effects 0.000 claims description 29
- 239000000956 alloy Substances 0.000 claims description 24
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 16
- 239000010936 titanium Substances 0.000 claims description 16
- 229910052719 titanium Inorganic materials 0.000 claims description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 14
- 238000000137 annealing Methods 0.000 claims description 11
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 10
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 5
- 229910052763 palladium Inorganic materials 0.000 claims description 5
- 229910052707 ruthenium Inorganic materials 0.000 claims description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052721 tungsten Inorganic materials 0.000 claims description 5
- 239000010937 tungsten Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 description 11
- 238000009864 tensile test Methods 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910004337 Ti-Ni Inorganic materials 0.000 description 2
- 229910011209 Ti—Ni Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical class [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 1
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- XTEGARKTQYYJKE-UHFFFAOYSA-N chloric acid Chemical compound OCl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-N 0.000 description 1
- 229940005991 chloric acid Drugs 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Conductive Materials (AREA)
- Heat Treatment Of Nonferrous Metals Or Alloys (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Description
（目的）
この発明は、腐食性の強い環境下で使用される
加工性に優れた耐食性チタン基合金材の製造方法
に関するものである。
（従来技術）
チタンは、耐食性に優れているので、従来の耐
食性金属に替つて広く工業用材料として使われる
ようになつてきている。特に硝酸、クロム酸、塩
素酸、二酸化塩素、又は塩素酸塩等のような酸化
性腐食環境並びに海水その他塩化物を含む腐食環
境において優れている。しかしながら、塩酸、硫
酸などのような非酸化性酸においては、上記のよ
うな環境下で使用するほど威力を発揮しない。
そのためこれを改良する合金として、Ti―Ni
合金が開発された。しかしながら、この合金はニ
ツケルを添加するので、加工性が著しく悪くなる
欠点を有している。そしてこの合金はニツケルの
添加量を少なくすることにより、加工性の低下を
少なくすることができるが、耐食性の向上がのぞ
めなくなり、加工性を低下させずに耐食性を向上
させることは事実上不可能であつた。
（発明の構成）
本発明者は、上記実情に鑑みチタン基合金の加
工性及び耐食性を改善させるため、熱処理の研究
を行うと同時に、耐食性を犠牲にすることなくニ
ツケルの添加量を減らす研究について鋭意行つた
結果、本発明を見い出すに到つた。すなわち、
本発明は、
ルテニウム 0.005wt％〜0.2wt％、
パラジウム 0.005wt％〜0.2wt％、
タングステン 0.005wt％〜0.5wt％、
の一種又は二種以上と
ニツケル 0.1wt％〜2.0wt％、
を含有し、残部チタン及び不可避的不純物からな
るチタン基合金を550℃以上750℃以下で焼鈍する
ことを特徴とする耐食性及び加工性に優れたチタ
ン基合金材の製造方法に関するものである。
（発明の具体的説明）
本発明においてルテニウム、パラジウム、タン
グステンを添加するのは、これらの添加元素によ
り著しく耐食性を向上させることができるためで
あり、これによりニツケルの添加量を低く抑えら
れ、耐食性を犠牲にせずに加工性を著しく改善さ
せることができる。ルテニウム、パラジウム、タ
ングステンの下限を0.005wt％としたので、これ
より少ない添加量では耐食性の向上が望めないた
めであり、ルテニウム、パラジウムの上限を
0.2wt％、タングステンの上限を0.5wt％としたの
は、これより多い添加量では加工性が低下して好
ましくないためである。又、ルテニウム、パラジ
ウムは価格が高いので特に必要以上に添加するの
ことは経済的でない。
またニツケルの添加量を0.1wt％〜2.0wt％とし
たのは、0.1wt％未満では耐食性の向上がなく、
また2.0wt％を超えると加工性が著しく悪化して
好ましくないからである。
さらに、焼鈍温度を550℃以上750℃以下とした
のは、この範囲で熱処理することにより加工性に
優れかつ耐食性がより向上した材料が得られるた
めである。
次に、本発明を具体的な実施例に基づき説明す
る。
（実施例）
第１表に、本発明のチタン基合金材と比較合金
及びこれらと焼鈍条件の違いによる耐食性の試験
結果を示す。この第１表のNo.７〜No.９に、比較材
である、純チタン、Ti―Ni合金の腐食速度を示
し、No.１〜No.６に、本発明のチタン基合金材の腐
食速度を示す。腐食条件は、５％HCl、沸とう24
時間浸漬である。第１表より明らかなように、比
較合金材の腐食速度が著しく高いのに対し、本発
明のチタン基合金材（No.１〜No.６）は、すべて腐
食速度が低く、耐食性に優れた合金であることが
わかる。そして、本発明合金材を冷間圧延上り
（ASroll）の材料及びそれに400℃〜900℃の熱処
理を加えた場合の腐食速度の違いをみると、冷間
圧延上り及び800℃、900℃の熱処理を行つた材料
については、腐食速度が高くなつているのに対し
400℃〜750℃の熱処理の場合には、腐食速度が著
しく低くなつている。これらから明らかなように
耐食性向上のためには、焼鈍条件を400℃〜750℃
の範囲で実施するのが適当であることが分る。
次に第１図及び第２表は、本発明のチタン基合
金材について、焼鈍温度を500℃〜900℃に変化さ
せ、曲げ試験と引張り試験により加工性を評価し
たものである。この第１図では、Ti―0.05Ru―
0.5Ni合金の引張り試験による伸びの結果を表し
ており、550℃〜750℃の焼鈍温度において優れた
伸びを示している。また第２表にはTi―0.05Ru
―0.5Ni合金の曲げ試験の結果を示しており、500
℃〜750℃において曲げ性は良好であるが、800℃
以上の焼鈍温度では曲げ性が著しく低下している
ことがわかる。以上の耐食性の試験と加工性の試
験（曲げ試験と引張り試験）とにより焼鈍温度に
は550℃以上750℃以下において優れた耐食性と加
工性が得られることが分つた。Ti―Pd―Ni合
金，Ti―Ｗ―Ni合金などの本発明に含まれる合
金材においても、まつたく同様な焼鈍温度範囲に
おいて優れた加工性と耐食性のテスト結果が得ら
れた。
以上、本発明の方法により製造されたチタン基
合金材は耐食性にすぐれ、しかも良好な加工性を
有していることがわかる。
(Objective) The present invention relates to a method for producing a corrosion-resistant titanium-based alloy material with excellent workability that is used in a highly corrosive environment. (Prior Art) Since titanium has excellent corrosion resistance, it has come to be widely used as an industrial material in place of conventional corrosion-resistant metals. It is particularly excellent in oxidizing corrosive environments such as nitric acid, chromic acid, chloric acid, chlorine dioxide, or chlorates, as well as corrosive environments containing seawater and other chlorides. However, non-oxidizing acids such as hydrochloric acid and sulfuric acid are not as effective when used in the above environment. Therefore, as an alloy to improve this, Ti-Ni
alloy was developed. However, since nickel is added to this alloy, it has the disadvantage that workability is significantly impaired. By reducing the amount of nickel added to this alloy, it is possible to reduce the decrease in workability, but it is no longer possible to improve corrosion resistance, and it is virtually impossible to improve corrosion resistance without decreasing workability. It was hot. (Structure of the Invention) In view of the above circumstances, the present inventor conducted research on heat treatment in order to improve the workability and corrosion resistance of titanium-based alloys, and at the same time conducted research on reducing the amount of nickel added without sacrificing corrosion resistance. As a result of diligent research, the present invention was discovered. That is, the present invention includes one or more of Ruthenium 0.005wt% to 0.2wt%, Palladium 0.005wt% to 0.2wt%, Tungsten 0.005wt% to 0.5wt%, and Nickel 0.1wt% to 2.0wt%. The present invention relates to a method for producing a titanium-based alloy material with excellent corrosion resistance and workability, which comprises annealing a titanium-based alloy material containing titanium and the remainder consisting of titanium and unavoidable impurities at a temperature of 550°C or higher and 750°C or lower. (Specific Description of the Invention) In the present invention, ruthenium, palladium, and tungsten are added because these additive elements can significantly improve corrosion resistance.This allows the amount of nickel added to be kept low and improves corrosion resistance. Processability can be significantly improved without sacrificing This is because the lower limit for ruthenium, palladium, and tungsten is set at 0.005wt%, and corrosion resistance cannot be expected to improve with smaller addition amounts.
The reason why the upper limit of tungsten is set to 0.2 wt% and 0.5 wt% is that if the amount added is larger than this, the workability deteriorates, which is not preferable. Furthermore, since ruthenium and palladium are expensive, it is not economical to add more than necessary. In addition, the reason why the amount of nickel added was set to 0.1wt% to 2.0wt% is because there is no improvement in corrosion resistance if it is less than 0.1wt%.
Moreover, if it exceeds 2.0 wt%, processability will deteriorate significantly, which is undesirable. Furthermore, the reason why the annealing temperature is set to 550° C. or higher and 750° C. or lower is that a material with excellent workability and improved corrosion resistance can be obtained by heat treatment within this range. Next, the present invention will be explained based on specific examples. (Example) Table 1 shows the test results of the titanium-based alloy material of the present invention, comparative alloys, and corrosion resistance according to differences in annealing conditions. Nos. 7 to 9 in Table 1 show the corrosion rates of pure titanium and Ti-Ni alloys, which are comparison materials, and Nos. 1 to 6 show the corrosion rates of the titanium-based alloy materials of the present invention. Indicates speed. Corrosion conditions are 5% HCl, boiling 24
It is a time immersion. As is clear from Table 1, the corrosion rate of the comparative alloy materials is extremely high, whereas the titanium-based alloy materials of the present invention (No. 1 to No. 6) all have low corrosion rates and excellent corrosion resistance. It can be seen that it is an alloy. Looking at the difference in corrosion rate when the alloy material of the present invention is cold rolled (ASroll) and heat treated at 400℃ to 900℃, it is found that The corrosion rate was higher for materials subjected to
In the case of heat treatment at 400°C to 750°C, the corrosion rate is significantly lower. As is clear from these, in order to improve corrosion resistance, the annealing conditions must be adjusted to 400℃ to 750℃.
It can be seen that it is appropriate to implement within the range of . Next, FIG. 1 and Table 2 show the workability of the titanium-based alloy material of the present invention, which was evaluated by bending tests and tensile tests while changing the annealing temperature from 500°C to 900°C. In this figure 1, Ti―0.05Ru―
It shows the elongation results of a 0.5Ni alloy in a tensile test, showing excellent elongation at an annealing temperature of 550°C to 750°C. Table 2 also shows Ti-0.05Ru
- Shows the results of bending test of 0.5Ni alloy, 500
Good bendability at temperatures between ℃ and 750℃, but at 800℃
It can be seen that the bendability is significantly reduced at the annealing temperature above. The above corrosion resistance test and workability test (bending test and tensile test) revealed that excellent corrosion resistance and workability can be obtained at an annealing temperature of 550°C or higher and 750°C or lower. Test results of excellent workability and corrosion resistance were also obtained for alloy materials included in the present invention, such as Ti--Pd--Ni alloy and Ti--W--Ni alloy, in the same annealing temperature range. The above shows that the titanium-based alloy material produced by the method of the present invention has excellent corrosion resistance and good workability.
【表】【table】
【表】
○……クラツク発生せず
△……クラツク発生
×……破断
[Table] ○...No crack occurred △...Crack occurred ×...Breakage
第１図は、本発明合金の焼鈍温度を500℃から
900℃まで変化させた場合の加工性の変化（Ti―
0.05Ru―0.51Niの引張り試験による伸びの結果）
を示したものである。
Figure 1 shows the annealing temperature of the alloy of the present invention from 500℃.
Change in workability when temperature is increased up to 900℃ (Ti-
Results of elongation by tensile test of 0.05Ru-0.51Ni)
This is what is shown.
Claims (1)
るチタン基合金を550℃以上750℃以下で焼鈍する
ことを特徴とする耐食性及び加工性に優れたチタ
ン基合金材の製造方法。[Claims] 1 Ruthenium 0.005wt% to 0.2wt%, palladium 0.005wt% to 0.2wt%, tungsten 0.005wt% to 0.5wt%, one or more of the following, and nickel 0.1wt% to 2.0wt%, 1. A method for producing a titanium-based alloy material having excellent corrosion resistance and workability, the method comprising annealing a titanium-based alloy material containing titanium and unavoidable impurities at 550°C or higher and 750°C or lower.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28311885 | 1985-12-18 | ||
| JP60-283118 | 1985-12-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62228459A JPS62228459A (en) | 1987-10-07 |
| JPS642662B2 true JPS642662B2 (en) | 1989-01-18 |
Family
ID=17661455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20602986A Granted JPS62228459A (en) | 1985-12-18 | 1986-09-03 | Manufacture of titanium alloy material having superior corrosion resistance and workability |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS62228459A (en) |
| DE (1) | DE3635123A1 (en) |
| GB (1) | GB2184455B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0784632B2 (en) * | 1986-10-31 | 1995-09-13 | 住友金属工業株式会社 | Method for improving corrosion resistance of titanium alloy for oil well environment |
| JPS63219557A (en) * | 1987-03-09 | 1988-09-13 | Nippon Mining Co Ltd | Production of titanium based alloy material having excellent corrosion resistance and press moldability |
| JPH0436445A (en) * | 1990-05-31 | 1992-02-06 | Sumitomo Metal Ind Ltd | Production of corrosion resisting seamless titanium alloy tube |
| US4997492A (en) * | 1990-06-08 | 1991-03-05 | Nippon Mining Co., Ltd. | Method of producing anode materials for electrolytic uses |
| DE10249580B4 (en) * | 2002-10-24 | 2005-04-14 | Friedr. Gustav Theis Kaltwalzwerke Gmbh | Process for improving the surface finish of titanium |
| JP6686744B2 (en) * | 2016-07-04 | 2020-04-22 | 日本製鉄株式会社 | Titanium alloy plate and its manufacturing method. |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4666666A (en) * | 1984-11-22 | 1987-05-19 | Nippon Mining Co., Ltd. | Corrosion-resistant titanium-base alloy |
-
1986
- 1986-09-03 JP JP20602986A patent/JPS62228459A/en active Granted
- 1986-10-15 DE DE19863635123 patent/DE3635123A1/en active Granted
- 1986-10-17 GB GB08624917A patent/GB2184455B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2184455B (en) | 1988-12-21 |
| GB8624917D0 (en) | 1986-11-19 |
| GB2184455A (en) | 1987-06-24 |
| DE3635123C2 (en) | 1989-01-19 |
| DE3635123A1 (en) | 1987-06-19 |
| JPS62228459A (en) | 1987-10-07 |
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