Cracking mechanism and mechanical properties of selective laser melted CoCrFeMnNi high entropy alloy using different scanning strategies
Cracking mechanism and mechanical properties of selective laser melted CoCrFeMnNi high entropy alloy using different scanning strategies
复制标题
不同扫描策略选区激光熔化CoCrFeMnNi高熵合金的开裂机理及力学性能
DOI:
10.1016/j.msea.2020.139672
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发表时间:
2020-07
期刊:
影响因子:
6.4
通讯作者:
Li Zhuguo
中科院分区:
文献类型:
--
作者:
Zhang Chengcheng;Feng Kai;Kokawa Hiroyuki;Han Bolun;Li Zhuguo
There are increasing interests in fabricating CoCrFeMnNi high entropy alloy (HEA) using selective laser melting (SLM). However, cracks formed in as-built CoCrFeMnNi bulks may deteriorate the mechanical performance. This study adopted three scanning strategies to systematically reveal the characteristics and formation mechanism of cracks during SLM of CoCrFeMnNi. The experimental results demonstrate that the cracks form at right-angle-shaped high angle grain boundaries (HAGBs) without elemental segregation or precipitate. The upper part of crack exhibits features of hot cracking while the lower part is likely to form by the propagation of the upper part in solid-state during thermal shrinking and contraction. Besides, the scanning strategy can effectively manipulate not only the morphology and density of cracks, but also the mechanical properties of as-built parts. This work can help to further understand the cracking mechanism during SLM of CoCrFeMnNi and the effects of scanning strategy on microstructure and mechanical properties of as-built products.
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影响因子:
24.2
作者:
Ye, Y. F.;Wang, Q.;Yang, Y.
通讯作者:
Yang, Y.
影响因子:
8.4
作者:
Wang, Dianzheng;Yu, Chenfan;Shen, Zhijian
通讯作者:
Shen, Zhijian
影响因子:
2.6
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Florian Peyrouzet;Dorian Hachet;R. Soulas;C. Navone;S. Godet;S. Gorsse
通讯作者:
Florian Peyrouzet;Dorian Hachet;R. Soulas;C. Navone;S. Godet;S. Gorsse
影响因子:
8.4
作者:
Sun, S. J.;Tian, Y. Z.;Zhang, Z. F.
通讯作者:
Zhang, Z. F.
影响因子:
11
作者:
Bahl, Sumit;Mishra, Sumeet;Suwas, Satyam
通讯作者:
Suwas, Satyam