Effects of trace Ag on precipitation behavior and mechanical properties of extruded Mg-Gd-Y-Zr alloys
发布时间：2022-06-10
点击次数：
DOI码：10.1016/S1003-6326(21)65737
发表刊物：Transactions of Nonferrous Metals Society of China
关键字：trace AgMg-Gd-Y-Zr alloybeta ' phaseprecipitation strengthening
摘要：The effects of trace Ag element on the precipitation behaviors and mechanical properties of the Mg-7.5Gd-1.5Y-0.4Zr (wt.%) alloy by means of tensile test, X-ray diffractometry, scanning electron microscopy, electron backscattered diffractometry, and scanning transmission electron microscopy. There is an unusual texture (< 0001 >//extrusion direction) in the extruded Mg-Gd-Y-Zr alloys containing 0.5 wt.% Ag. During the aging periods at 225 degrees C, the addition of the trace Ag does not form new precipitates, just accelerates aging kinetics, and refines beta' precipitates, thereby increasing the number density of the beta' precipitates by Ag-clusters. Moreover, the Mg-Gd-Y-Zr alloy containing 0.5 wt.% Ag shows the most excellent synergy of strength and plasticity (408 MPa of ultimate tensile strength, 265 MPa of yield strength, and 12.9% of elongation to failure) after peak-aging.
合写作者：C.M. Liu, S.N. Jiang*, Z.Y. Chen, Y.C. Wan
第一作者：D.D. Zhang
论文类型：期刊论文
文献类型：J
卷号：31
期号：11
页面范围：3394-3404
ISSN号：1003-6326
是否译文：否
发表时间：2021-11-10