Microstructure and mechanical characterization of friction stir welded high strength low alloy steels

R. Ramesh; I. Dinaharan; Ravi Kumar; E. T. Akinlabi

doi:10.1016/j.msea.2017.01.050

Microstructure and mechanical characterization of friction stir welded high strength low alloy steels

R. Ramesh, I. Dinaharan, Ravi Kumar, E. T. Akinlabi

Mechanical Engineering Science

Research output: Contribution to journal › Article › peer-review

45 Citations (Scopus)

Abstract

Friction stir welding (FSW) is a promising technique to join HSLA steels without the problems encountered during fusion based welding processes. In the present work, 3 mm thick HSLA plates were successfully welded using FSW. A tool made of tungsten-rhenium alloy was used in this work. The relationship between microstructure and tensile strength was studied under various welding conditions i.e. change in traverse speed (57–97 mm/min). The microstructure of the weld nugget revealed the presence of upper bainite and fine ferrite phases. The amount of upper bainite reduced with increase in traverse speed. EBSD images showed a reducing trend for grain size. The details of hardness, tensile strength and bending test were reported.

Original language	English
Pages (from-to)	39-46
Number of pages	8
Journal	Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume	687
DOIs	https://doi.org/10.1016/j.msea.2017.01.050
Publication status	Published - 27 Feb 2017

Keywords

Friction stir welding
High strength low alloy steel
Microstructure
Tensile strength

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2017.01.050

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abstract = "Friction stir welding (FSW) is a promising technique to join HSLA steels without the problems encountered during fusion based welding processes. In the present work, 3 mm thick HSLA plates were successfully welded using FSW. A tool made of tungsten-rhenium alloy was used in this work. The relationship between microstructure and tensile strength was studied under various welding conditions i.e. change in traverse speed (57–97 mm/min). The microstructure of the weld nugget revealed the presence of upper bainite and fine ferrite phases. The amount of upper bainite reduced with increase in traverse speed. EBSD images showed a reducing trend for grain size. The details of hardness, tensile strength and bending test were reported.",

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T1 - Microstructure and mechanical characterization of friction stir welded high strength low alloy steels

AU - Ramesh, R.

AU - Dinaharan, I.

AU - Kumar, Ravi

AU - Akinlabi, E. T.

PY - 2017/2/27

Y1 - 2017/2/27

N2 - Friction stir welding (FSW) is a promising technique to join HSLA steels without the problems encountered during fusion based welding processes. In the present work, 3 mm thick HSLA plates were successfully welded using FSW. A tool made of tungsten-rhenium alloy was used in this work. The relationship between microstructure and tensile strength was studied under various welding conditions i.e. change in traverse speed (57–97 mm/min). The microstructure of the weld nugget revealed the presence of upper bainite and fine ferrite phases. The amount of upper bainite reduced with increase in traverse speed. EBSD images showed a reducing trend for grain size. The details of hardness, tensile strength and bending test were reported.

AB - Friction stir welding (FSW) is a promising technique to join HSLA steels without the problems encountered during fusion based welding processes. In the present work, 3 mm thick HSLA plates were successfully welded using FSW. A tool made of tungsten-rhenium alloy was used in this work. The relationship between microstructure and tensile strength was studied under various welding conditions i.e. change in traverse speed (57–97 mm/min). The microstructure of the weld nugget revealed the presence of upper bainite and fine ferrite phases. The amount of upper bainite reduced with increase in traverse speed. EBSD images showed a reducing trend for grain size. The details of hardness, tensile strength and bending test were reported.

KW - Friction stir welding

KW - High strength low alloy steel

KW - Microstructure

KW - Tensile strength

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Microstructure and mechanical characterization of friction stir welded high strength low alloy steels

Abstract

Keywords

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