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Strategic Study of CAE >> 2014, Volume 16, Issue 2

δ-TRIP steel:Physical and mechanical metallurgy

1. The State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110189,China;

2. China Automobile Engineering Research Institute,Chongqing 400039,China

Funding project:国家自然科学基金资助项目(51204051);中央高校基本科研业务费项目(N120507001,N120607001) Received: 2013-10-09 Available online: 2014-01-22 13:08:21.000

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Abstract

δ- transformation induced plasticity(TRIP) steel has performed high strength combined with excellent ductility,which satisfy the requirements for the third generation advance steels for automotive application. In addition,it could to be spot welded. It’s high potential to be industrialized for both manufacture and automotive application. The development of δ-TRIP,microstructure and mechanical properties,transformation and microstructure evolution,strength and toughness mechanism will be reviewed. The process and physical metallurgy for resistance spot welding will be discussed as well.

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