Softening in Dual Phase Steel Joints: An understanding based on kinetics and characteristics of martensite tempering

滑铁卢大学和ArcelorMittal Dofasco Inc.之间拟议的合作研发项目，旨在详细了解马氏体回火过程与汽车工业中使用的各种焊接工艺中发生的双相钢软化现象的相关性。软化现象的理解将通过马氏体钢焊缝和基体金属的硬度测量与接头性能联系起来。该研究将加强对一个重要问题的基本理解，即热影响区软化，这阻碍了双相钢在制造业中的应用。该项目的成果将成为加拿大汽车制造商增加采用双相钢的资产。

The proposed collaborative research and development project, between the University of Waterloo and ArcelorMittal Dofasco Inc., aims for a detailed understanding of the martensite tempering process with correlation to the softening phenomenon in dual phase steels that occurs in various welding processes used in automotive industries. The understanding of the softening phenomenon will be linked to joint performance by hardness measurements of the martensitic steel welds and base metal. The study will enhance the fundamental understanding of an important issue i.e. heat affected zone softening, which hampers the employment of dual phase steels in manufacturing industries. The results of this project will be an asset increasing the adoption of dual phase steels by the automotive manufacturers in Canada.