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Low‐alloy TRIP Steels: Evaluation of the Mechanical Performance with regard to Material Design Requirements in the Automotive Industry
Author(s) -
Alexopoulos Nikolaos D.
Publication year - 2006
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.200606365
Subject(s) - automotive industry , alloy , ultimate tensile strength , materials science , index (typography) , metallurgy , quality (philosophy) , bainite , mechanical engineering , engineering , microstructure , computer science , austenite , philosophy , epistemology , world wide web , aerospace engineering
The tensile mechanical performance of different low‐alloy TRIP steels has been evaluated with regard to material design requirements in the automotive industry. Experimental results obtained for variations in chemical composition and for different bainite holding heat treatment conditions in low‐alloy TRIP steels were exploited. Both laboratory scale and commercially produced TRIP steels were investigated. For the evaluation of the mechanical performance, the quality index Q D has been introduced. The index Q D considers the combination of tensile strength and strain energy density in a single value. Quality characterization and alloy quality ranking were made using the index Q D as well as, for comparison, the quality index Q B = R m ·A g , which is currently used by the industry. The results obtained involving the index Q D seem to be more realistic, from the viewpoint of automotive design requirements.