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

IF 4.4 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis Pub Date : 2025-04-25 DOI:10.1016/j.engfailanal.2025.109652

Sudharsan S , Raja Annamalai A

引用次数: 0

Abstract

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.

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铸态和热处理Mg-Gd-Y-Er合金的室温疲劳行为

在本研究中，研究了Mg-Gd-Y-Er合金在铸造、T4和t6处理条件下的疲劳行为。高周疲劳（HCF）试验在室温下进行，频率为15 Hz，应力比为0.1。铸态和t4处理试样在105次循环下的疲劳强度为51 MPa。同时，经过t6处理的合金的疲劳强度分别为55 MPa和68 MPa，分别比铸态合金的疲劳强度提高了7%和33%。两种情况下的断口表面均呈现脆性断裂模式。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Engineering Failure Analysis 工程技术-材料科学：表征与测试

CiteScore

7.70

自引率

20.00%

发文量

956

审稿时长

47 days

期刊介绍： Engineering Failure Analysis publishes research papers describing the analysis of engineering failures and related studies. Papers relating to the structure, properties and behaviour of engineering materials are encouraged, particularly those which also involve the detailed application of materials parameters to problems in engineering structures, components and design. In addition to the area of materials engineering, the interacting fields of mechanical, manufacturing, aeronautical, civil, chemical, corrosion and design engineering are considered relevant. Activity should be directed at analysing engineering failures and carrying out research to help reduce the incidences of failures and to extend the operating horizons of engineering materials. Emphasis is placed on the mechanical properties of materials and their behaviour when influenced by structure, process and environment. Metallic, polymeric, ceramic and natural materials are all included and the application of these materials to real engineering situations should be emphasised. The use of a case-study based approach is also encouraged. Engineering Failure Analysis provides essential reference material and critical feedback into the design process thereby contributing to the prevention of engineering failures in the future. All submissions will be subject to peer review from leading experts in the field.