Mechanical and magnetic properties of TRIP690 steel strengthened by strain-induced martensite

Peng, Yuqin; Huang, Haihong

doi:10.1016/j.jmmm.2022.169083

Cited by 2 publications

(2 citation statements)

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“…The strengthening mechanism of these steels leverages solid-state solution hardening of carbon in iron and the substantial dislocation density resulting from the martensitic transformation. Although there are extensive references in the literature discussing the influence of martensite content on the properties of TRIP steels, such as the correlation between martensite fraction and strength [15][16][17], martensite fraction and ductility [1,[18][19][20], and the kinetics of deformation and transformation [21,22], among others, the origin of the exceptional ductility in TRIP steels has been a subject of debate. Some authors attributed it to phase transformation strain, but this theory has been mathematically challenged [22,23].…”

Section: Introductionmentioning

confidence: 99%

“…Metals 2023, 13, x FOR PEER REVIEW 2 of 15 martensite content on the properties of TRIP steels, such as the correlation between martensite fraction and strength [15][16][17], martensite fraction and ductility [1,[18][19][20], and the kinetics of deformation and transformation [21,22], among others, the origin of the exceptional ductility in TRIP steels has been a subject of debate. Some authors a ributed it to phase transformation strain, but this theory has been mathematically challenged [22,23].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Laser Surface Texturing on Schmid Factor and Plastic Deformation Mechanisms on AISI 301LN Steel

Rezayat,

Roa,

Mateo

2023

Metals

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In this comprehensive study, the multifaceted impact of laser surface texturing (LST) on AISI 301LN stainless steel is explored. Changes in the microstructure, mechanical properties, and grain characteristics are examined. The dynamic relationship between Schmid factor evolution and plastic deformation in this stainless steel alloy is unveiled through the analysis of grain statistics and individual grain scrutiny. It is revealed that LST initiates the formation of strain-induced α’-martensite, grain refinement, and substantial hardness enhancements. Notably, an α’-martensite crystalline size of 2.05 Å is induced by LST. Furthermore, a 12% increase in tensile strength is observed after LST along with an 11% boost in yield strength. However, reductions of 19% in elongation to fracture and 12% in the area reduction are experienced.

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