Fatigue behavior of as-cast and heat-treated Mg-Gd-Y-Er alloy at room temperature

被引：0
作者：
S, Sudharsan [1 ]
A, Raja Annamalai [2 ]
机构：
[1] School of Mechanical Engineering, Vellore Institute of Technology, Tamil Nadu, Vellore
[2] Centre for Innovative Manufacturing Research, Vellore Institute of Technology, Tamil Nadu, Vellore
来源：
Engineering Failure Analysis | 2025年 / 176卷
关键词：
Fatigue; Fractography; Heat treatment; Mg alloy;
D O I：
10.1016/j.engfailanal.2025.109652
中图分类号：
学科分类号：
摘要：
In this study, the fatigue behavior of the Mg-Gd-Y-Er alloy has been investigated under cast, T4, and T6-treated conditions. The high-cycle fatigue (HCF) test was conducted at room temperature, with a frequency of 15 Hz and a stress ratio of 0.1. The as-cast and T4-treated samples exhibit a fatigue strength of 51 MPa at 105 cycles. At the same time, the T6-treated samples show fatigue strengths of 55 MPa and 68 MPa, which are 7 % and 33 % higher than the fatigue strength of the as-cast alloy. The fractured surface reveals the brittle mode of fracture in both conditions. © 2025 Elsevier Ltd
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