This paper investigates the characteristics of GMAW of various sheet steels grades ranging from HSLA, dual phase, to martensitic. From the arc welding point of view, the dual phase and martensitic steels behave similarly to conventional high strength steels. Regarding the properties of GMAW joints, the static and dynamic mechanical testing were conducted and compared along with the weld metal microhardness and microstructure. Results show that while the strength of the sheet steel weld, in general increases with the base material strength, Joint Efficiency, defined as the ratio of the strength of joint to the strength of the base metal, decreases with the increase of martensite fraction in the sheet steel. Martensitic steels, especially, exhibits reduced weld strength due to softening of the HAZ. However, fatigue strength of these steels is not adversely affected by the softened HAZ, and is insensitive to the strength of the steel. The hardness distribution in weldments can significantly affect the static performance of the welds and is dependent on the steel chemistry, steel processing and filler metal.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Performance Evaluation of GMAW Welds for Four Advanced High Strength Steels


    Additional title:

    Sae Technical Papers


    Contributors:
    Yan, Benda (author) / Zhu, Hong (author) / Lalam, Sree Harsha (author)

    Conference:

    SAE 2005 World Congress & Exhibition ; 2005



    Publication date :

    2005-04-11




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Performance evaluation of gmaw welds for four advanced high strength steels

    Yan,B. / Lalam,S.H. / Zhu,H. et al. | Automotive engineering | 2005


    Fatigue Performance of Advanced High-Strength Steels (AHSS) GMAW Joints

    Jiang, Chonghua / Chiang, John / Kuo, Min et al. | SAE Technical Papers | 2009


    Fatigue performance of advanced high-strength steels ( AHSS ) GMAW joints

    Feng,Z. / Sang,Y. / Jiang,C. et al. | Automotive engineering | 2009


    Evaluation of Constitutive Behavior of Aluminum Extrusions and Their GMAW Welds

    Kang, J. / gong, K. / Shen, G. et al. | British Library Conference Proceedings | 2013


    Evaluation of Constitutive Behavior of Aluminum Extrusions and Their GMAW Welds

    Shen, Guowu / Chen, James / Kang, Jidong et al. | SAE Technical Papers | 2013