MOUTH-LIKE CRACKING IN A HIGH-STRENGTH MULTIPHASE STEEL AND ITS RELATIONSHIP TO FRACTURE TOUGHNESS

• Published in: WIT Transactions on Engineering Sciences Vol. 133; p. 3
• Main Authors: Wang, Xuan, Gao, Jicheng, YUN HANG, Zheng, Yi, Northwood, Derek O, Liu, Cheng
• Format: Journal Article
• Language: English
• Published: Southampton W I T Press 01.01.2021
• Subjects: Air cooling; Austempering; Bainite; Crack arrest; Crack propagation; Crack tips; Elongation; Fracture surfaces; Fracture toughness; High strength steels; Martensite; Martensitic transformations; Medium carbon steels; Microstructure; Multiphase; Quenching; Retained austenite; Room temperature; Steel; Stress concentration; Ultimate tensile strength

The effect of microstructure on crack growth behaviour in steels has always been a subject of considerable research interest. Based on a quenching and partitioning process (Q&P), and the transformation of a nano-scaled bainite in advanced high-strength steels, a novel quenchingpartitioning- aust...