| Influence of Aging Treatment on the Microstructure and High Temperature Mechanical Properties for 15Cr-15Ni Titanium-modified Austenitic Stainless Steel in 20% Cold-worked Condition | |
| Wang Zhinan1; Liang Tian1; Zhang Long1; Du Aibing2; Gao Ming1; Ma Yingche1; Liu Kui1 | |
| Corresponding Author | Liang Tian(tliang@imr.ac.cn) |
| 2018-11-01 | |
| Source Publication | RARE METAL MATERIALS AND ENGINEERING
 |
| ISSN | 1002-185X |
| Volume | 47Issue:11Pages:3504-3511 |
| Abstract | Titanium-stabilized 15Cr-15Ni austenitic stainless steel in 20% cold-worked condition is considered as a promising candidate high temperature structural material for core components in liquid metal-cooled fast reactors (LMFR). Microstructure and high temperature mechanical properties of the as cold-worked alloy and the ones with different aging treatments were investigated by metallographic microscope, scanning and transmission electron microscope, and tensile testing machine. The results demonstrate that the recovery takes place when the alloy is aged at 550 degrees C for 336 h. The emergence of twins is attributed to dislocations movement. When the aging temperature increases to 650 and 750 degrees C, the amount of twins are reduced because of alloys' further recovery. Sigma phase precipitates from austenitic matrix along grain boundaries when alloys are aged at 650 similar to 750 degrees C for 336 h. The amount and size of Sigma phase increase with the increase in aging temperature. Because of the grain boundary strengthening, alloys aged at 550 degrees C have slightly higher yield strength and ultimate tensile strength than the as cold-worked alloy. The high temperature yield strength and ultimate tensile strength decrease significantly, while plasticity increases observably at the aging temperature of 650 and 750 degrees C. |
| Keyword | titanium-stabilized 15Cr-15Ni austenitic stainless steel aging treatment high temperature tension Sigma phase |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000452694200039 |
| Publisher | NORTHWEST INST NONFERROUS METAL RESEARCH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/130731 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liang Tian |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China 2.China Inst Atom Energy, Beijing 102413, Peoples R China |
| Recommended Citation GB/T 7714 | Wang Zhinan,Liang Tian,Zhang Long,et al. Influence of Aging Treatment on the Microstructure and High Temperature Mechanical Properties for 15Cr-15Ni Titanium-modified Austenitic Stainless Steel in 20% Cold-worked Condition[J]. RARE METAL MATERIALS AND ENGINEERING,2018,47(11):3504-3511. |
| APA | Wang Zhinan.,Liang Tian.,Zhang Long.,Du Aibing.,Gao Ming.,...&Liu Kui.(2018).Influence of Aging Treatment on the Microstructure and High Temperature Mechanical Properties for 15Cr-15Ni Titanium-modified Austenitic Stainless Steel in 20% Cold-worked Condition.RARE METAL MATERIALS AND ENGINEERING,47(11),3504-3511. |
| MLA | Wang Zhinan,et al."Influence of Aging Treatment on the Microstructure and High Temperature Mechanical Properties for 15Cr-15Ni Titanium-modified Austenitic Stainless Steel in 20% Cold-worked Condition".RARE METAL MATERIALS AND ENGINEERING 47.11(2018):3504-3511. |
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