| HEALING OF HYDROGEN ATTACK CRACK IN AUSTENITE STAINLESS STEEL UNDER HEAT TREATMENT |
| |
| 引用本文： | X.G.Li,C.F.Dong and H.Chen School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China State Key Laboratory of Corrosion and Protection,Institute of Metal Research,The Chinese Academy of Sciences,She. HEALING OF HYDROGEN ATTACK CRACK IN AUSTENITE STAINLESS STEEL UNDER HEAT TREATMENT[J]. 金属学报(英文版), 2002, 15(4): 385-390 |
| |
| 作者姓名： | X.G.Li C.F.Dong and H.Chen School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China State Key Laboratory of Corrosion and Protection Institute of Metal Research The Chinese Academy of Sciences She |
| |
| 作者单位： | X.G.Li，C.F.Dong and H.Chen School of Materials Science and Engineering，University of Science and Technology Beijing，Beijing 100083，China State Key Laboratory of Corrosion and Protection，Institute of Metal Research，The Chinese Academy of Sciences，She |
| |
| 基金项目： | Thanks are due to the National Natural Science Foundation of China(Grant No.59971011)，National Key Basic Research and Development Programme of China(No.G19990650) for financial support. |
| |
| 摘 要： | The specimens of 304 austenite stainless steel with the hydrogen attack bubbles or cracks were heat treated at 600℃ for 6h. The SEM and TEM observations on the specimens before and after the heat treatment showed that the bubbles or cracks could be healed completely by heat treatment. The healing of hydrogen attack bubbles or cracks is closely related to heat diffusion of Fe and C atoms in austenite. The driving force of crack healing results from the plastic deforming energy Es induced by the growth of hydrogen attack bubbles or cracks. The critical condition of healing of bubbles or cracks is Es≥2γ (where γ is the surface tension, r is the radius of bubbles or half length of crack). During healing of the hydrogen attack bubbles or cracks, the recovery, polygonization and recrystallization of the sub-grain also occured.
|
| 收稿时间： | 2001-10-20 |
| 修稿时间： | 2002-06-07 |
HEALING OF HYDROGEN ATTACK CRACK IN AUSTENITE STAINLESS STEEL UNDER HEAT TREATMENT |
| |
| X.G.Li,C.F.Dong,H.Chen. HEALING OF HYDROGEN ATTACK CRACK IN AUSTENITE STAINLESS STEEL UNDER HEAT TREATMENT[J]. Acta Metallurgica Sinica(English Letters), 2002, 15(4): 385-390 |
| |
| Authors: | X.G.Li C.F.Dong H.Chen |
| |
| Affiliation: | School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China；State Key Laboratory of Corrosion and Protection, Institute of Metal Research, The Chinese Academy of Sciences, Shenyang 110016, China |
| |
| Abstract: | The specimens of 304 austenite stainless steel with the hydrogen attack bubbles orcracks were heat treated at 600℃ for 6h. The SEM and TEM observations on thespecimens before and after the heat treatment showed that the bubbles or cracks could behealed completely by heat treatment. The healing of hydrogen attack bubbles or cracksis closely related to heat diffusion of Fe and C atoms in austenite. The driving forceof crack healing results fram the plastic deforming energy Es induced by the growthof hydrogen attack bubbles or cracks. The critical condition of healing of bubbles orcracks is Es ≥ 2γ/r (where γγ is the surface tension, r is the radius of bubbles or halflength of crack). During healing of the hydrogen attack bubbles or cracks, the recovery,polygonization and recrystallization of the sub-grain also occured. |
| |
| Keywords: | stainless steel hydrogen attack bubble or crack healing |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《金属学报(英文版)》浏览原始摘要信息 |
|
点击此处可从《金属学报(英文版)》下载全文 |
