中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 金属研究所
  3. 中国科学院金属研究所
Different effects of multiscale microstructure on fatigue crack growth path and rate in selective laser melted Ti6Al4V

文献类型：期刊论文

作者Qi, Zhao1,2; Wang, Bin1; Zhang, Peng1; Liu, Riu1; Zhang, Zhenjun1; Zhang, Zhefeng1,2
刊名FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
出版日期2022-06-02
页码11
ISSN号8756-758X
关键词fatigue crack growth rate heat treatment microstructure selective laser melting strength Ti6Al4V
DOI10.1111/ffe.13757
通讯作者Zhang, Peng(pengzhang@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn)
英文摘要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.
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
语种英语
出版者WILEY
WOS记录号WOS:000804993300001
资助机构National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; IMR Innovation Fund ; K. C. Wong Education Foundation
源URL[http://ir.imr.ac.cn/handle/321006/174239]  
专题金属研究所_中国科学院金属研究所
通讯作者Zhang, Peng; Zhang, Zhefeng
作者单位1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
2.Zhengzhou Univ, Henan Inst Adv Technol, Zhengzhou, 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.

入库方式： OAI收割

来源：金属研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。