Analysis of Metallurgical and Mechanical Properties of Continuous and Pulsed Current Gas Tungsten Arc Welded Alloy C-276 with Duplex Stainless Steel

被引：22

作者：

Manikandan, M. ^{[1
]}

Arivazhagan, N. ^{[1
]}

Arivarasu, M. ^{[1
]}

Mageshkumar, K. ^{[1
]}

Rajan, Deva N. ^{[2
]}

Murugan, B. Arul ^{[1
,3
]}

Prasanth, P. ^{[3
]}

Sukumar, S. ^{[3
]}

Vimalanathan, R. ^{[3
]}

机构：

[1] VIT Univ, Sch Mech Engn, Vellore, Tamil Nadu, India

[2] Panimalar Engn Coll, Dept Mech Engn, Madras, Tamil Nadu, India

[3] KPR Inst Engn & Technol, Dept Mech Engn, Coimbatore, Tamil Nadu, India

来源：

TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 2017年 / 70卷 / 03期

关键词：

Alloy C-276; Pulsed current gas tungsten arc welding; Secondary phases; HASTELLOY C-276; MICROSTRUCTURE; IMPROVEMENT; RESISTANCE; WELDMENTS; BEHAVIOR;

D O I：

10.1007/s12666-017-1045-6

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The present work investigates the microstructure and mechanical properties of alloy C-276 fabricated by continuous and pulsed current gas tungsten arc welding process and by employing ER2553 filler wire. Optical and scanning electron microscopic analyses were carried out to study the microstructures of weldments produced. Energy dispersive X-ray spectroscopy (EDS) was performed to investigate the formation of secondary phases in the weldments. The results disclosed that pulsed current gas tungsten arc welding showed refined microstructure compared to continuous current gas tungsten arc welding. SEM/EDS analysis revealed the segregation of Mo in the weld interface regions in both the welding techniques. The extent of microsegregation reduced the strength and toughness of the weld joint compared to the base metal. Bend test revealed cracks in the weld interface region in both the weldments.

引用

页码：661 / 669

页数：9

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