Influence of PC-GTAW Parameters on the microstructural and mechanical properties of thin AISI 1008 steel joints

R.K. Kumar, R. Anant, P.K. Ghosh, Ankit Kumar, B.P. Agrawal

    Research output: Contribution to journalArticleScientificpeer-review

    12 Citations (Scopus)

    Abstract

    Butt weld joints are prepared using pulse current gas tungsten arc welding out of thin sheets of AISI 1008 steel using various combinations of pulse parameters. During welding, the welding speed was kept high, but with the increase of welding speed the mean current was also increased to get the required weld joint at the constant heat input. The use of pulse current has led to improvement in mechanical and metallurgical properties of weld joints. It has resulted in less development of humping which is a common problem with high-speed welding. The undercut or dipped weld face is not observed severe. The tensile strength and hardness are enhanced by 12.5 and 12%. The increase of tensile strength and hardness is justified through TEM micrograph showing the presence of dislocation.

    Original languageEnglish
    Pages (from-to)3756-3765
    JournalJournal of Materials Engineering and Performance
    Volume25
    Issue number9
    DOIs
    Publication statusPublished - 2016

    Keywords

    • hardness
    • HAZ
    • microstructure
    • PC-GTAW
    • TEM

    Fingerprint

    Dive into the research topics of 'Influence of PC-GTAW Parameters on the microstructural and mechanical properties of thin AISI 1008 steel joints'. Together they form a unique fingerprint.

    Cite this