In-situ experimental investigation on fatigue crack growth behavior and crack tip plastic zone evolution of laser powder bed fused TiC/ Ti6Al4V composites
文献类型：期刊论文
| 作者 | Li, Wei2; Sun, Chuanwen2; Li C(李成)3; Liu, Gang4; Sun, Zhenduo1,5 |
| 刊名 | MATERIALS TODAY COMMUNICATIONS
 |
| 出版日期 | 2025-12-01 |
| 卷号 | 49页码:8 |
| 关键词 | Laser powder bed fusion TiC/Ti6Al4V composite In-situ test Crack growth behavior Crack closure |
| DOI | 10.1016/j.mtcomm.2025.113731 |
| 通讯作者 | Li, Wei(lliw@bit.edu.cn) ; Li, Cheng(licheng@imech.ac.cn) |
| 英文摘要 | In-situ fatigue crack growth tests are conducted on laser powder bed fused TiC/Ti6Al4V composites under a stress ratio of 0, utilizing digital image correlation and characterization techniques to monitor crack evolution. As a result, the major crack exhibits a microscopically sinuous zigzag path, resulting from the growth and coalescence of microcracks governed by localized shear stress. Owing to microstructural barriers such as prior beta grain boundaries, the propagation of microstructurally small crack with a length of less than 200 mu m exhibits notable discontinuity and retardation. In contrast, an acceleration in crack growth rate is observed along the alpha phase boundaries within individual grains, indicating a path of reduced resistance. Compared to the long crack, the physically small crack shows larger near-tip deformation and smaller plastic zone size, attributed to the reduced crack closure effect. The existence of fatigue steps, secondary small cracks, local fatigue striations, and pore defects further confirms the influence of microstructure on crack growth behavior. |
| 分类号 | 二类 |
| 资助项目 | National Natural Science Foundation of China[52175128] ; State Key Laboratory for Mechanical Behavior of Materials[20232501] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001569211700009 |
| 资助机构 | National Natural Science Foundation of China ; State Key Laboratory for Mechanical Behavior of Materials |
| 其他责任者 | Li, Wei，李成 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/103901]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Hebei Univ, Coll Qual & Tech Supervis, Baoding 071002, Peoples R China; 2.Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 4.Xi An Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China; 5.Hebei Univ, Hebei Technol Innovat Ctr Lightweight New Energy V, Baoding 071002, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Wei,Sun, Chuanwen,Li C,et al. In-situ experimental investigation on fatigue crack growth behavior and crack tip plastic zone evolution of laser powder bed fused TiC/ Ti6Al4V composites[J]. MATERIALS TODAY COMMUNICATIONS,2025,49:8. |
| APA | Li, Wei,Sun, Chuanwen,李成,Liu, Gang,&Sun, Zhenduo.(2025).In-situ experimental investigation on fatigue crack growth behavior and crack tip plastic zone evolution of laser powder bed fused TiC/ Ti6Al4V composites.MATERIALS TODAY COMMUNICATIONS,49,8. |
| MLA | Li, Wei,et al."In-situ experimental investigation on fatigue crack growth behavior and crack tip plastic zone evolution of laser powder bed fused TiC/ Ti6Al4V composites".MATERIALS TODAY COMMUNICATIONS 49(2025):8. |
入库方式： OAI收割
来源：力学研究所
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