Critical Inclusion Size and Void Growth in Dual-Phase Ferrite-Bainite Steel During Ductile Fracture
文献类型：期刊论文
| 作者 | Zhao Yafeng1,3; Liu Sujie3; Chen Yun3; Ma Hui3; Ma Guangcai2; Guo Yi3 |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2023-05-01 |
| 卷号 | 59期号:5页码:611-622 |
| 关键词 | dual-phase ferrite-bainite steel void nucleation and growth 3D-EBSD X-ray computed tomography size effect |
| ISSN号 | 0412-1961 |
| DOI | 10.11900/0412.1961.2022.00293 |
| 通讯作者 | Guo Yi(yguo@imr.ac.cn) |
| 英文摘要 | Ferrite-bainite dual-phase steel is widely used in the automotive industry owing to its high strength and excellent ductility. The impact of inclusions and void growth behavior in dual-phase steel is a major concern among researchers seeking to achieve better mechanical properties. To investigate this, a cross-length-scale multimodal method was employed to study the influence of local microstructures on void growth during ductile fracture of a dual-phase ferrite-bainite steel. During tensile testing, laboratory X-ray computed tomography (XCT) was used to measure the evolution of void volume. 3D-electron back scatter diffraction (3D-EBSD) provided information about the voids nucleated at both inclusion particles and bainite phases or their boundaries. Carefully controlled, broad-focused ion beam excavation was performed to reveal a new interface at a specific depth of the voids. Results showed that voids resulting from large inclusions are significantly bigger than either small inclusions or the bainite phase. Large inclusions lead to large voids even when the strain correlated with the growth of those voids is lower. An investigation of the dislocation densities surrounding the voids suggested that they may be related to the strain gradient around the different inclusion sizes. A critical inclusion size estimated to be around 1.85-2.86 mu m was found below which nucleation occurs but with limited growth. The elevated rate of local dislocation multiplication due to local deformation gradient effects can impede the growth of smaller voids. The growth of voids is heterogeneous, and their shape correlates well with the deformability of the surrounding grains, as indicated by a Schmid factor weighted using the grain size. This weighted Schmid factor explains not only the shape of the voids but also sheds light on the ease of void coalescence based on the microstructures separating the voids. |
| 资助项目 | National Natural Science Foundation of China[52201149] ; National Science and Technology Major Project[J2019-VI-0019-0134] ; Strategic Priority Research Program of Chinese Academy of Sciences ; ERC CORREL-CT Project[695638] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000971778800003 |
| 出版者 | SCIENCE PRESS |
| 资助机构 | National Natural Science Foundation of China ; National Science and Technology Major Project ; Strategic Priority Research Program of Chinese Academy of Sciences ; ERC CORREL-CT Project |
| 源URL | [http://ir.imr.ac.cn/handle/321006/177584]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Guo Yi |
| 作者单位 | 1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.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 | Zhao Yafeng,Liu Sujie,Chen Yun,et al. Critical Inclusion Size and Void Growth in Dual-Phase Ferrite-Bainite Steel During Ductile Fracture[J]. ACTA METALLURGICA SINICA,2023,59(5):611-622. |
| APA | Zhao Yafeng,Liu Sujie,Chen Yun,Ma Hui,Ma Guangcai,&Guo Yi.(2023).Critical Inclusion Size and Void Growth in Dual-Phase Ferrite-Bainite Steel During Ductile Fracture.ACTA METALLURGICA SINICA,59(5),611-622. |
| MLA | Zhao Yafeng,et al."Critical Inclusion Size and Void Growth in Dual-Phase Ferrite-Bainite Steel During Ductile Fracture".ACTA METALLURGICA SINICA 59.5(2023):611-622. |
入库方式： OAI收割
来源：金属研究所
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