TY - JOUR
T1 - Micromechanical properties and deformation behavior of Al3BC/6061 Al composites via micropillar compression
AU - Zhao, Yongfeng
AU - Singaravelu, Arun Sundar S.
AU - Ma, Xia
AU - Zhang, Qingdong
AU - Liu, Xiangfa
AU - Chawla, Nikhilesh
N1 - Funding Information:
This research was financially supported by the National Natural Science Foundation of China (No. 51731007 ) and the Key Foundation of Shandong Province (No. ZR2016QZ005 ). We acknowledge the Center for 4D Materials Science at Arizona State University for support of this research work. The first author thanks the China Scholarship Council for financial support to study at Arizona State University . We acknowledge the use of facilities within the Eyring Materials Center at Arizona State University supported in part by NNCI-ECCS-1542160 . The authors thank Marion Branch Kelly for her great effort to polish the manuscript.
Funding Information:
This research was financially supported by the National Natural Science Foundation of China (No. 51731007) and the Key Foundation of Shandong Province (No. ZR2016QZ005). We acknowledge the Center for 4D Materials Science at Arizona State University for support of this research work. The first author thanks the China Scholarship Council for financial support to study at Arizona State University. We acknowledge the use of facilities within the Eyring Materials Center at Arizona State University supported in part by NNCI-ECCS-1542160. The authors thank Marion Branch Kelly for her great effort to polish the manuscript.
PY - 2020/1/31
Y1 - 2020/1/31
N2 - Al3BC has been proved to be a promising candidate as reinforcement of Al alloy. In this work, Al3BC reinforced 6061 Al composites were in-situ fabricated through a liquid-solid reaction method followed by hot extrusion, and the micromechanical properties as well as deformation behavior of the composites were investigated via micropillar compression. The Al3BC/6061 composites show a significant improvement of compression strength than the matrix alloy, indicating an outstanding strengthening effect of Al3BC. Compared with the large parallel local slip bands on the post-compressed pillars of unreinforced matrix materials, the wrinkled slip bands were observed and homogenously distribute on the post-compressed pillars of the composites, indicating an impeding effect on the propagation of slip bands and a better slip homogenization caused by Al3BC particles. The strengthening mechanisms were also discussed and microstructural characterizations reveal that the high strength of the composites is mainly attributed to its high dislocation density, grains refinement and load transfer effects caused by Al3BC.
AB - Al3BC has been proved to be a promising candidate as reinforcement of Al alloy. In this work, Al3BC reinforced 6061 Al composites were in-situ fabricated through a liquid-solid reaction method followed by hot extrusion, and the micromechanical properties as well as deformation behavior of the composites were investigated via micropillar compression. The Al3BC/6061 composites show a significant improvement of compression strength than the matrix alloy, indicating an outstanding strengthening effect of Al3BC. Compared with the large parallel local slip bands on the post-compressed pillars of unreinforced matrix materials, the wrinkled slip bands were observed and homogenously distribute on the post-compressed pillars of the composites, indicating an impeding effect on the propagation of slip bands and a better slip homogenization caused by Al3BC particles. The strengthening mechanisms were also discussed and microstructural characterizations reveal that the high strength of the composites is mainly attributed to its high dislocation density, grains refinement and load transfer effects caused by Al3BC.
KW - Al composites
KW - AlBC
KW - Mechanical behavior
KW - Micropillar compression
KW - Strengthening mechanism
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U2 - 10.1016/j.msea.2019.138852
DO - 10.1016/j.msea.2019.138852
M3 - Article
AN - SCOPUS:85077492790
SN - 0921-5093
VL - 773
JO - Materials Science and Engineering A
JF - Materials Science and Engineering A
M1 - 138852
ER -