Achieving better synergy of strength and ductility by adjusting size and volume fraction of coherent Kappa'-carbides in a lightweight steel
文献类型：期刊论文
| 作者 | Wang J(王建)1,2 ; Yang MX(杨沐鑫)2; Wu XL(武晓雷)1,2; Yuan FP(袁福平)1,2; Wu XL(武晓雷); Yuan FP(袁福平); Yang MX(杨沐鑫); Wang J(王建)
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| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
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| 出版日期 | 2022-11-01 |
| 卷号 | 857页码:10 |
| ISSN号 | 0921-5093 |
| DOI | 10.1016/j.msea.2022.144085 |
| 英文摘要 | Heterogeneous grain structures with dual-nanoprecipitates have been designed and fabricated in a lightweight steel. The size and the volume fraction of coherent Kappa'-carbides are increased by aging treatment, while the volume fraction of B2 precipitates and the heterogeneous grain structure are nearly unchanged after aging treatment. The aged samples are found to have a better synergy of strength and ductility, as compared to the unaged samples. The better tensile properties in the aged samples can be owing to the higher hetero-deformation-induced hardening and the higher density of induced geometrically necessary dislocations during tensile deformation. Two distinct precipitation hardening mechanisms are revealed for the dual-nanoprecipitates, i.e., bypassing mechanism for B2 precipitates and shearing mechanism for coherent Kappa'-carbides. Numerous dislo-cations can be observed both around and inside coherent Kappa'-carbides. High density of stacking faults and nanotwins can also be found in the grain interiors of the aged samples, resulting in strong strain hardening by interaction between them and dislocations. The better tensile properties in the aged samples can also be attributed to the stronger shearing precipitation hardening effect by larger size and higher volume fraction of coherent Kappa'-carbides. |
| 分类号 | 一类 |
| 语种 | 英语 |
| 其他责任者 | Yuan, Fuping |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/90518]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 15 Beisihuan West Rd, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Wang J,Yang MX,Wu XL,et al. Achieving better synergy of strength and ductility by adjusting size and volume fraction of coherent Kappa'-carbides in a lightweight steel[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,857:10. |
| APA | 王建.,杨沐鑫.,武晓雷.,袁福平.,Wu XL.,...&Wang J.(2022).Achieving better synergy of strength and ductility by adjusting size and volume fraction of coherent Kappa'-carbides in a lightweight steel.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,857,10. |
| MLA | 王建,et al."Achieving better synergy of strength and ductility by adjusting size and volume fraction of coherent Kappa'-carbides in a lightweight steel".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 857(2022):10. |
入库方式： OAI收割
来源：力学研究所
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