High-Temperature Plasticity Enhanced by Multiple Secondary Phases in a High-Si Austenitic Stainless Steel
文献类型：期刊论文
| 作者 | Chen, Sihan2,3,4; Liang, Tian2,4; Ma, Guangcai2,4; Zheng, Chengwu5; Chen, Deli1; Ma, Yingche2,4; Liu, Kui2,4 |
| 刊名 | ACTA METALLURGICA SINICA-ENGLISH LETTERS
 |
| 出版日期 | 2022-02-16 |
| 页码 | 12 |
| 关键词 | High-Si austenitic stainless steel High-temperature deformation Plasticity enhancement Dynamic recrystallization Secondary phases |
| ISSN号 | 1006-7191 |
| DOI | 10.1007/s40195-022-01388-5 |
| 通讯作者 | Liang, Tian(tliang@imr.ac.cn) ; Liu, Kui(kliu@imr.ac.cn) |
| 英文摘要 | An austenitic stainless steel with 6 wt% Si and multiple secondary phases was produced with the aim to achieve enhanced plasticity during hot deformation. The microstructure of the steel after fracture was characterized via electron back-scattered diffraction, transmission Kikuchi diffraction and scanning transmission electron microscopy. From the tail of the gage to the necking region, the microstructure of the material evolved from low-angle grain boundaries (LAGBs) to mixtures of LAGBs and high-angle grain boundaries (HAGBs), and fine equiaxed recrystallized grains. The elongation to failure in the tensile test exceeds 167%. During the hot deformation, continuous dynamic recrystallization of the austenitic matrix was promoted by the multiple secondary phases. The dislocations introduced by the secondary phases were rearranged and continuously transformed into HAGBs. The initially coarse grains (30.5 mu m) were refined into ultra-fine equiaxed grains (1 mu m), which contributed significantly the enhanced plasticity during hot deformation of the steel. In the necking area of the sample, twins were nucleated in the stress concentration regions and accommodated the local strain by discontinuous dynamic recrystallization, which was also beneficial to improving the plasticity. |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000757536400008 |
| 出版者 | CHINESE ACAD SCIENCES, INST METAL RESEARCH |
| 源URL | [http://ir.imr.ac.cn/handle/321006/173308]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liang, Tian; Liu, Kui |
| 作者单位 | 1.Fushun Special Steel Grp Co Ltd, Fushun Sub Ctr, Tech Ctr, Fushun 113001, Peoples R China 2.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 5.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Sihan,Liang, Tian,Ma, Guangcai,et al. High-Temperature Plasticity Enhanced by Multiple Secondary Phases in a High-Si Austenitic Stainless Steel[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2022:12. |
| APA | Chen, Sihan.,Liang, Tian.,Ma, Guangcai.,Zheng, Chengwu.,Chen, Deli.,...&Liu, Kui.(2022).High-Temperature Plasticity Enhanced by Multiple Secondary Phases in a High-Si Austenitic Stainless Steel.ACTA METALLURGICA SINICA-ENGLISH LETTERS,12. |
| MLA | Chen, Sihan,et al."High-Temperature Plasticity Enhanced by Multiple Secondary Phases in a High-Si Austenitic Stainless Steel".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2022):12. |
入库方式： OAI收割
来源：金属研究所
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