Transformation induced plasticity

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Advanced Materials and Processes | 2005年 / 163卷 / 09期
关键词：
Austenite - Fracture toughness - Martensite - Phase transitions - Plastic deformation - Plasticity - Steel heat treatment - Strain - Strain hardening - Tensile properties - Volume fraction - Yield stress;
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摘要：
Through transformation induced plasticity (TRIP), certain highly alloyed steels can be heat treated to produce metastable austenite or metastable austenite plus martensite. The resultant TRIP steels are highly plastic after heat treatment, but exhibit a very high rate of strain hardening, and thus have high tensile and yield strengths after plastic deformation between 20 and 500°C. Cooling to -195°C may or may not be needed to complete the transformation to martensite.
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