[J] 共同セッション：マルテンサイト・ベイナイト変態の材料科学と応用(2)

[J41] Tensile Properties, Fatigue Crack Growth, and Fracture Toughness of a Thermo-mechanically Rolled and Direct Quenched and Partitioned (TMR-DQP) 0.4% C Steel.

*Gaurav Kumar¹, Sumit Ghosh², Sakari Pallaspuro², Mahesh　C. Somani², Jukka Kömi², Sushil　K. Mishra¹, Amol　A. Gokhale¹ (1. Department of Mechanical Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, India、2. Materials and Mechanical Engineering, Centre for Advanced Steels Research, University of Oulu, 90014, Oulun Yliopisto, Finland)

キーワード：Martensitic steel、Retained austenite、Austenite transformation、Fracture Toughness、Fatigue Crack Growth

Improved combination of mechanical properties of martensite-austenite Thermo-mechanically Rolled Direct Quenched and Partitioned Steel is presented compared to its fully martensitic counterpart.