| MICROSTRUCTURE NEAR SCRATCH ON ALLOY 690TT AND STRESS CORROSION INDUCED BY SCRATCHING | |
| Meng Fanjiang1; Wang Jianqiu1; Han En-Hou1; Shoji, Testuo2; Ke Wei1 | |
| Corresponding Author | Wang Jianqiu(wangjianqiu@imr.ac.cn) |
| 2011-07-11 | |
| Source Publication | ACTA METALLURGICA SINICA
 |
| ISSN | 0412-1961 |
| Volume | 47Issue:7Pages:839-846 |
| Abstract | The microstructure and stress corrosion cracking (SCC) behavior of scratched zone on alloy 690TT were studied by using rnicrohardness, TEM, EBSD-OIM and immersion experiment in caustic solution. It was found that a deformed hardening layer with a dimension range of 100 Am was produced near the scratch. TEM and EBSD-OIM observations showed that the grains at shallow surface of scratch groove were refined to nano size. SCC tests for scratched alloy 690TT were performed in caustic solution at high temperature with or without addition of lead oxides. The results showed that SCC cracks initiated and propagated at scratch banks and scratch grooves. Grain boundaries, twin boundaries deformed and microcracks produced during scratching process are preferential sites for SCC. The oxide films formed on scratch groove were loosed by lead. The SCC crack length increased with increase of lead content. Scratched alloy 690TT is susceptible to SCC. |
| Keyword | Ni base alloy 690 surface scratch microstructure stress corrosion cracking |
| Funding Organization | National Basic Research Program of China |
| DOI | 10.3724/SP.J.1037.2011.00213 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Basic Research Program of China[2006CB605000] |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000294980700012 |
| Publisher | SCIENCE PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/105953 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wang Jianqiu |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China 2.Tohoku Univ, Fracture & Reliabil Res Inst, Sendai, Miyagi 9808579, Japan |
| Recommended Citation GB/T 7714 | Meng Fanjiang,Wang Jianqiu,Han En-Hou,et al. MICROSTRUCTURE NEAR SCRATCH ON ALLOY 690TT AND STRESS CORROSION INDUCED BY SCRATCHING[J]. ACTA METALLURGICA SINICA,2011,47(7):839-846. |
| APA | Meng Fanjiang,Wang Jianqiu,Han En-Hou,Shoji, Testuo,&Ke Wei.(2011).MICROSTRUCTURE NEAR SCRATCH ON ALLOY 690TT AND STRESS CORROSION INDUCED BY SCRATCHING.ACTA METALLURGICA SINICA,47(7),839-846. |
| MLA | Meng Fanjiang,et al."MICROSTRUCTURE NEAR SCRATCH ON ALLOY 690TT AND STRESS CORROSION INDUCED BY SCRATCHING".ACTA METALLURGICA SINICA 47.7(2011):839-846. |
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