| Different effects of multiscale microstructure on fatigue crack growth path and rate in selective laser melted Ti6Al4V | |
| Qi, Zhao1,2; Wang, Bin2; Zhang, Peng2; Liu, Riu2; Zhang, Zhenjun2; Zhang, Zhefeng1,2 | |
| 通讯作者 | Zhang, Peng(pengzhang@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn) |
| 2022-06-02 | |
| 发表期刊 | FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
 |
| ISSN | 8756-758X |
| 页码 | 11 |
| 摘要 | During the selective laser melting (SLM) process of Ti6Al4V, a special structure can be formed with columnar prior beta grains along the building direction and fully martensitic alpha ' within the beta grain. To investigate the influence of such special structure on the fatigue crack growth (FCG) rate, Ti6Al4V specimens fabricated by SLM were heat-treated at two different temperatures in this study. The columnar grains were retained, and the martensite was decomposed when heat-treated below the beta transus. It is found that all the SLM features were removed when heat-treated above the beta transus. FCG rate tests were subsequently performed at room temperature, and it was found that the prior beta grains affected the macroscopic fracture morphology, but there was no discernible influence on the FCG rate. The morphology of the alpha phase affected the crack growth path and the FCG rate. Changes in the strength-toughness relationship induced by heat treatment can help understand the decrease in the FCG rate. |
| 关键词 | fatigue crack growth rate heat treatment microstructure selective laser melting strength Ti6Al4V |
| 资助者 | National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; IMR Innovation Fund ; K. C. Wong Education Foundation |
| DOI | 10.1111/ffe.13757 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Natural Science Foundation of China[52130002] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2018226] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2021192] ; IMR Innovation Fund[2021-PY05] ; IMR Innovation Fund[2022-PY06] ; K. C. Wong Education Foundation[GJTD-2020-09] |
| WOS研究方向 | Engineering ; Materials Science |
| WOS类目 | Engineering, Mechanical ; Materials Science, Multidisciplinary |
| WOS记录号 | WOS:000804993300001 |
| 出版者 | WILEY |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/174240 |
| 专题 | 中国科学院金属研究所 |
| 通讯作者 | Zhang, Peng; Zhang, Zhefeng |
| 作者单位 | 1.Zhengzhou Univ, Henan Inst Adv Technol, Zhengzhou, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qi, Zhao,Wang, Bin,Zhang, Peng,et al. Different effects of multiscale microstructure on fatigue crack growth path and rate in selective laser melted Ti6Al4V[J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,2022:11. |
| APA | Qi, Zhao,Wang, Bin,Zhang, Peng,Liu, Riu,Zhang, Zhenjun,&Zhang, Zhefeng.(2022).Different effects of multiscale microstructure on fatigue crack growth path and rate in selective laser melted Ti6Al4V.FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,11. |
| MLA | Qi, Zhao,et al."Different effects of multiscale microstructure on fatigue crack growth path and rate in selective laser melted Ti6Al4V".FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES (2022):11. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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