Microstructural design for damage tolerance in high strength steels

被引：13

作者：

Samei, Javad ^{[1
]}

Pelligra, Concetta ^{[1
]}

Amirmaleki, M. ^{[2
]}

Wilkinson, David S. ^{[1
]}

机构：

[1] McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON, Canada

[2] Univ Toronto, Dept Mech & Ind Engn, 5 Kings Coll Rd, Toronto, ON M5S 3G8, Canada

来源：

MATERIALS LETTERS | 2020年 / 269卷

关键词：

Deformation and fracture; Grain refinement; Transformation induced plasticity; Third-generation steels; X-ray techniques; PHASE; GROWTH; NUCLEATION; CARBON; VOIDS;

D O I：

10.1016/j.matlet.2020.127664

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated the capabilities of first and third-generation high strength steels for sustainable accommodation of microstructural damage before fracture occurs. Steels have been subjected to tensile tests followed by X-ray computed tomography to record the evolution of microstructural damage during deformation. Damage growth is correlated with the Rice-Tracey model. Results show that both grain refinement and transformation induced plasticity of retained austenite to martensite lead to enhanced damage tolerance, leading to the suppression of fracture and improved ductility. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：4

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