Microstructure evolution of AZ91 alloy processed by a combination method of equal channel angular pressing and rolling
Year: 2020
Type: article
Abstract: In the present work, AZ91 alloy was successfully processed by equal channel angular pressing (ECAP) for up to 16 passes and rolling (R) for multiple passes with a total reduction of 75% in addition to a combination method with ECAP plus rolling (ECAP+R). The effects of various processes (ECAP, R and ECAP+R) on microstructure evolution were analyzed and the influence of ECAP process on the rolling performance was examined. The result shows that ECAP contributed to a homogenous grain structure and formed a texture with higher Schmidt factors that was easy for rolling. A plate with smoother surface and reduced edge cracks was observed in the ECAP+R process than in the single R process. Although the microstructure of the alloy was similar after ECAP+R and R process, the sample of ECAP+R was more refined and had stronger second phase precipitation than the sample of R, which resulted in better rolling characteristics, along with the external surfaces.
Source: Journal of Magnesium and Alloys
Authors: Qiong Xu, Aibin Ma, Yuhua Li, Jiapeng Sun, Yuchun Yuan, Jinghua Jiang, Chaoying Ni
Institutions: Hohai University, University of Delaware
Language: English
Subfield: Biomaterials
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,500
OpenAlex ID: W3007123342