Effect of Alumina Addition on the Microstructure and Mechanical Properties of Metal Inert Gas Welded Low Carbon Steel

被引：1

作者：

Sathish, S. ^{[1
]}

Geetha, M. ^{[2
]}

机构：

[1] Aalim Muhammed Salegh Coll Engn, Avadi IAF, Dept Mech Engn, Madras 600055, Tamil Nadu, India

[2] VIT Univ, Sch Mech & Bldg Sci, Vellore 632014, Tamil Nadu, India

来源：

TRANSACTIONS OF THE INDIAN CERAMIC SOCIETY | 2017年 / 76卷 / 03期

关键词：

Alumina; Laser remelting; Microstructure; Hardness; Fractography; PLASMA-SPRAYED ALUMINA; FIBER LASER; STAINLESS-STEEL; COATINGS; WEAR; BEHAVIOR; JOINTS; RESISTANCE; OXIDATION; ALLOY;

D O I：

10.1080/0371750X.2017.1296785

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study, influence of alumina addition on weld appearance, microstructure and mechanical properties of metal inert gas (MIG) welded low carbon mild steel were emphatically investigated. Experimental results show that all the joints were smooth with free of cracks. Microstructures of MIG and laser remelted joints show the presence of columnar and equiaxed dendrites. Furthermore, superior microhardness of MIG welded joint over alumina added and laser remelted joints is ascribed to the presence of columnar dendrites. Fractography of the tensile tested alumina added joint exhibited a mixed mode of ductile and brittle characteristics and this is attributed to the presence of acicular ferrites and bainite in the microstructure.

引用

页码：176 / 182

页数：7

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