Tribological properties of selective laser melted Al-12Si alloy

被引：62

作者：

Rathod, Hemant J. ^{[1
]}

Nagaraju, T. ^{[2
]}

Prashanth, K. G. ^{[3
,4
]}

Ramamurty, U. ^{[5
]}

机构：

[1] Texas A&M Univ, Dept Mat Sci & Engn, College Stn, TX 77843 USA

[2] Rajiv Gandhi Univ Knowledge Technol, Dept Met & Mat Engn, Basar 504107, India

[3] Tallinn Univ Technol, Dept Mech & Ind Engn, Ehitajate Tee 5, EE-19086 Tallinn, Estonia

[4] Austrian Acad Sci, Erich Schmid Inst Mat Sci, Jahnstr 12, A-8700 Leoben, Austria

[5] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

来源：

TRIBOLOGY INTERNATIONAL | 2019年 / 137卷

关键词：

Additive manufacturing; Selective laser melting; Al-based alloys; Tribology; SLIDING WEAR BEHAVIOR; MECHANICAL-PROPERTIES; PROCESSING PARAMETERS; TENSILE PROPERTIES; HEAT-TREATMENT; SI ALLOYS; MICROSTRUCTURE; FRICTION; FABRICATION; COMPOSITES;

D O I：

10.1016/j.triboint.2019.04.038

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The effect of scanning strategy and heat-treatment on the tribological properties of Al-12Si fabricated using selective laser melting (SLM) were evaluated and compared with their cast counterparts (CC). The SLM sample shows a mesostructure and in addition, the microstructure consists of the Al rich cells surrounded by Si network in the fine cellular structure. Annealing leads to the precipitation of Si and disintegration of the cellular structure, resulting in the reduction of hardness. The as-prepared SLM specimens show the least wear rate compared to heat treated SLM and CC specimens. SLM specimens built with single melt (SM) and checkerboard (CB) scanning strategies have similar hardness, the wear rate of in the former is significantly higher due to high porosity in it.

引用

页码：94 / 101

页数：8

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