JPS5441217A - Hydrogen embrittlement preventing method for stainless steel - Google Patents
Hydrogen embrittlement preventing method for stainless steelInfo
- Publication number
- JPS5441217A JPS5441217A JP10770977A JP10770977A JPS5441217A JP S5441217 A JPS5441217 A JP S5441217A JP 10770977 A JP10770977 A JP 10770977A JP 10770977 A JP10770977 A JP 10770977A JP S5441217 A JPS5441217 A JP S5441217A
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- postheating
- ferrite
- hydrogen
- weld
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
PURPOSE:To reduce the hydrogen embrittlement of a stainless steel base metal and a weld metal under a high temp. high press, hydrogen amosphere by adding an adquate amt. of ferrite to the metals so as to limit carbides to be precipitated, at the time of weld postheating in the ferrite matrix. CONSTITUTION:When a stainless steel base metal and a weld metal subjected to weld postheating in manufacture of a vessel are operated under a high temp. high press, hydrogen atmosphere, the stainless steel absorbs a large amt. of hydrogen, lowering the elongation. So, cracjing occurs on ta portion where stress concentrates. In order to prevent the occurrence of cracking, 3-7% ferrite is added to the metals prior to the postheating to limit carbides to be precipitated at the time of the postheating in the ferrite matrix. As a result, ferrite in the stainless steel preferentially precipitated owing to the carbides is present discontinuously and sporadically, and hence more than 30% elingation can be maintained even if hydgrogen treatment is carried out after the postheating, resulting in no cracking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10770977A JPS5441217A (en) | 1977-09-09 | 1977-09-09 | Hydrogen embrittlement preventing method for stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10770977A JPS5441217A (en) | 1977-09-09 | 1977-09-09 | Hydrogen embrittlement preventing method for stainless steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5441217A true JPS5441217A (en) | 1979-04-02 |
Family
ID=14465950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10770977A Pending JPS5441217A (en) | 1977-09-09 | 1977-09-09 | Hydrogen embrittlement preventing method for stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5441217A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6068428U (en) * | 1983-10-15 | 1985-05-15 | オーバル機器工業株式会社 | Flowmeter rotor bearing structure |
| CN117444552A (en) * | 2023-12-25 | 2024-01-26 | 中北大学 | Method for improving hydrogen embrittlement resistance of 316L stainless steel hydrogen conveying pipe |
-
1977
- 1977-09-09 JP JP10770977A patent/JPS5441217A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6068428U (en) * | 1983-10-15 | 1985-05-15 | オーバル機器工業株式会社 | Flowmeter rotor bearing structure |
| CN117444552A (en) * | 2023-12-25 | 2024-01-26 | 中北大学 | Method for improving hydrogen embrittlement resistance of 316L stainless steel hydrogen conveying pipe |
| CN117444552B (en) * | 2023-12-25 | 2024-03-12 | 中北大学 | Method for improving hydrogen embrittlement resistance of 316L stainless steel hydrogen conveying pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES414942A1 (en) | Vacuum degassed, interstitial-free, low carbon steel and method for producing same | |
| GB1049380A (en) | A zirconium alloy | |
| GB948355A (en) | Improvements relating to nickel steels | |
| GB1159969A (en) | Steel and Weld Metal | |
| JPS5441217A (en) | Hydrogen embrittlement preventing method for stainless steel | |
| GB1464131A (en) | Manufacture of shadow masks | |
| JPS51126320A (en) | Process for producing high tensile strength steel plate with excellent weldability and bendability | |
| GB1287178A (en) | Process of manufacturing heat resisting steel sheet for deep drawing | |
| GB923844A (en) | Austenitic steel generator rings and steel therefor | |
| JPS5757835A (en) | Production of steel plate for can making | |
| JPS5288597A (en) | Process and apparatus for production of carbon monoxide | |
| JPS5413414A (en) | Medium cr low ni stainless cast steel of high corrosion resistance and high strength | |
| Scortea et al. | Time Evolution of the Characteristics of a Low Alloy Heat Resistant Steel | |
| GB849702A (en) | A precipitation hardenable steel | |
| JPS552773A (en) | Heat-treating method for heat resistant nickel base alloy pipe | |
| Takeyama et al. | Formation of Microcrack Due to Hydrogen Aggregation in Iron and Steel | |
| JPS5228421A (en) | Low alloy steel accompanying no stress relieving annealing crack at we lded parts | |
| JPS52129611A (en) | High tensile steel wire having excellent ductility and its production process | |
| JPS5358421A (en) | Heat resisting alloy | |
| JPS5295526A (en) | Production of heat treatment type high tension steel of utmost thickne ss | |
| JPS5633491A (en) | Cathode for eletrolysis | |
| JPS56150157A (en) | Steel for low-temperature with excellent toughness at welded part | |
| Uzlov | Trends in Heat Treatment of Rolled Steel | |
| GB1027806A (en) | Cobalt base alloys | |
| JPS535017A (en) | High tensile cold rolled steel sheet and its production method |