增材制造AlSi10Mg和17 - 4phss圆柱缺口试样的疲劳行为：体积缺陷的影响

IF 4.4 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis Pub Date : 2025-04-14 DOI:10.1016/j.engfailanal.2025.109602

Arun Poudel , Jonathan Pegues , Matthew Kelly , Shuai Shao , Nima Shamsaei

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引用次数: 0

摘要

研究了体积缺陷和缺口几何对激光粉末床熔接AlSi10Mg和17-4沉淀硬化（PH）不锈钢（SS）圆柱缺口试样疲劳行为的协同影响。在缺口根半径ρ分别为0.1、5和50 mm时，0.1 mm的疲劳寿命最短。对于ρ 0.1 mm，所有疲劳裂纹都起源于缺口根部，对于ρ 5 mm和50mm试样，所有疲劳裂纹都起源于体积缺陷或车削槽。考虑缺口几何形状、缺陷尺寸和位置协同影响的i型应力强度因子与AlSi10Mg和17-4 PH SS缺口试样的实验疲劳寿命具有良好的相关性。

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Fatigue behaviour of additively manufactured AlSi10Mg and 17–4 PH SS cylindrical notched specimens: The effect of volumetric defects

This study investigated the synergistic effects of volumetric defects and notch geometry on the fatigue behavior of laser powder bed fused AlSi10Mg and 17–4 precipitation hardening (PH) stainless steel (SS) cylindrical notched specimens. Among the considered notch root radii, ρ, of 0.1, 5, and 50 mm, 0.1 mm showed the shortest fatigue lives. All fatigue cracks initiated from the notch root for ρ 0.1 mm and from volumetric defects or turning grooves for ρ 5 mm and 50 mm specimens. The mode-I stress intensity factor, taking into account the synergistic influence of notch geometry, defects’ size, and location, was found to correlate well with experimental fatigue lives of AlSi10Mg and 17–4 PH SS notched specimens.

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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.