Ductilisation and fatigue life enhancement of selective laser melted AlSi10Mg by friction stir processing

被引：63

作者：

Macias, Juan Guillermo Santos ^{[1
]}

Elangeswaran, Chola ^{[2
]}

Zhao, Lv ^{[1
]}

Van Hooreweder, Brecht ^{[2
]}

Adrien, Jerome ^{[3
]}

Maire, Eric ^{[3
]}

Buffiere, Jean-Yves ^{[3
]}

Ludwig, Wolfgang ^{[3
]}

Jacques, Pascal J. ^{[1
]}

Simar, Aude ^{[1
]}

机构：

[1] Catholic Univ Louvain, Inst Mech Mat & Civil Engn, IMAP, B-1348 Louvain La Neuve, Belgium

[2] Katholieke Univ Leuven, Dept Mech Engn, Celestijnenlaan 300b, B-3001 Leuven, Belgium

[3] Univ Lyon, Mateis, INSA Lyon, CNRS UMR5510, F-69621 Villeurbanne, France

来源：

SCRIPTA MATERIALIA | 2019年 / 170卷

基金：

欧洲研究理事会;

关键词：

Selective laser melting; Friction stir processing; Aluminium alloys; Ductility; Fatigue test; HIGH-CYCLE FATIGUE; MECHANICAL-PROPERTIES; MICROSTRUCTURE; BEHAVIOR; TI-6AL-4V; STRENGTH;

D O I：

10.1016/j.scriptamat.2019.05.044

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In the effort of expanding the already existing applications of additively manufactured parts, improving mechanical performance is essential. Friction stir processing (FSP) is a promising post-treatment solution to tackle this issue. FSP of selective laser melted AlSi10Mg leads to the globularisation of the Si-rich eutectic network, microstructural homogenisation and porosity reduction. These features have been characterised using in and ex situ mechanical testing and different imaging techniques. A significant modification of the damage mechanism is reported with an increase of the fracture strain from 0.1 to 0.4 after FSP and an enhancement over two orders of magnitude in fatigue life. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：124 / 128

页数：5

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