Active Slip Mode Analysis of an Additively Manufactured Ti-6Al-4V Alloy via In-Grain Misorientation Axis Distribution

Li, Chen1; Sun, Jingli2; Feng, Aihan1; Wang, Hao3; Zhang, Xiaoyu4; Zhang, Chaoqun5,6; Zhao, Fu7; Cao, Guojian8; Qu, Shoujiang1; Chen, Daolun9

2022-04-01

10.3390/met12040532

METALS   影响因子和分区

2075-4701

Selective laser-melted (SLM) Ti-6Al-4V alloy was quasi-statically compressed in the transverse and longitudinal directions at a strain rate of 1 x 10(-3) s(-1) at room temperature. The twinning, in-grain misorientation axis (IGMA) distribution and active slip modes of individual grains in the deformed SLM Ti-6Al-4V alloy were studied in detail via transmission Kikuchi diffraction (TKD) and transmission electron microscopy (TEM). The alpha'/alpha phase was textured with the c-axis oriented either at similar to 45 degrees or perpendicular to the building direction (BD). A combined analysis of the IGMA distribution and Schmid factor revealed that the prismatic slip or pyramidal slip was easily activated in the soft grains with their c-axes perpendicular to the BD (or the loading direction) in the longitudinal compressed sample, while slip was hardly activated in the transverse compressed sample due to the lack of soft grains. Prismatic slip with IGMA around <0001> Taylor axis also occurred in {10-11} twins. The observations revealed that the prismatic slip played a key role in accommodating the external strain and, thus, well explained the anisotropy of mechanical properties in the SLM Ti-6Al-4V alloy.

Ti-6Al-4V alloy additive manufacturing selective laser melted (SLM) in-grain misorientation axis (IGMA) anisotropy transmission Kikuchi diffraction (TKD)

SCI

英语

其他

National Nature Science Foundation of China[51701116] ; Key-Area Research and Development Program of Guangdong Province[2019B010941001] ; Major Special Science and Technology Project of Yunnan Province[202002AB08001-3] ; Shanghai Rising-Star Program[19QB1402000] ; Innovation Group Project of the Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)[311021013]

Materials Science ; Metallurgy & Metallurgical Engineering

Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:000785263700001

MDPI

Web of Science

1.Tongji Univ, Sch Mat Sci & Engn, Shanghai 201804, Peoples R China
2.Shanghai Spaceflight Precis Machinery Inst, Res & Dev Ctr, Shanghai 201600, Peoples R China
3.Univ Shanghai Sci & Technol, Interdisciplinary Ctr Addit Mfg, Sch Mat & Chem, Shanghai 201210, Peoples R China
4.China Acad Space Technol, Beijing Inst Spacecraft Syst Engn, Beijing Key Lab Intelligent Space Robot Syst Tech, Beijing 100094, Peoples R China
5.Sun Yat Sen Univ, Sch Mat, Guangzhou 510275, Peoples R China
6.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Innovat Grp Marine Engn Mat & Corros Control, Zhuhai 519082, Peoples R China
7.Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Shenzhen 518055, Peoples R China
8.Nanjing Tech Univ, Key Lab Light Weight Mat, Nanjing 211816, Peoples R China
9.Ryerson Univ, Dept Mech & Ind Engn, Toronto, ON M5B 2K3, Canada

Li, Chen,Sun, Jingli,Feng, Aihan,et al. Active Slip Mode Analysis of an Additively Manufactured Ti-6Al-4V Alloy via In-Grain Misorientation Axis Distribution[J]. METALS,2022,12(4).

Li, Chen.,Sun, Jingli.,Feng, Aihan.,Wang, Hao.,Zhang, Xiaoyu.,...&Chen, Daolun.(2022).Active Slip Mode Analysis of an Additively Manufactured Ti-6Al-4V Alloy via In-Grain Misorientation Axis Distribution.METALS,12(4).

Li, Chen,et al."Active Slip Mode Analysis of an Additively Manufactured Ti-6Al-4V Alloy via In-Grain Misorientation Axis Distribution".METALS 12.4(2022).