期刊
MATERIALS TRANSACTIONS
卷 49, 期 7, 页码 1629-1637出版社
JAPAN INST METALS & MATERIALS
DOI: 10.2320/matertrans.MRA2008031
关键词
resistance spot welding; microstructure and mechanical properties; dual phase steels; transformation induced plasticity steel; ferritic-bainitic steel; high strength low alloy steel
Integration of advanced high strength steels (AHSS) into the automotive architecture has brought renewed challenges for achieving acceptable welds. Resistance spot welding (RSW) is the primary method used ill welding automotive structures, which has resulted in a demand to better understand RSW of AHSS. The varying, alloy contents and processing techniques used in their production has further complicated this initiative. The current study examines resistance spot welding of AHSS including 590R, DP600, DP780 and TRIP780. HSLA material is also included to represent conventional high strength steels and benchmark AHSS performance. The mechanical properties and microstructure of these resistance welded steel alloys are detailed. Furthermore. a relationship between chemistries and fusion zone hardness is produced.
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