Effect of Ni addition on the mechanical behavior of quenching and partitioning (Q & P) steel

被引：44

作者：

Kim, Kibum ^{[1
]}

Lee, Seok-Jae ^{[1
]}

机构：

[1] Chonbuk Natl Univ, Res Ctr Adv Mat Dev, Div Adv Mat Engn, Jeonju 54896, South Korea

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2017年 / 698卷

关键词：

Ni addition; Mechanical properties; Retained austenite; Strain-induced martensite; Quenching and partitioning (Q & P); INDUCED MARTENSITIC-TRANSFORMATION; INDUCED PLASTICITY STEEL; AUSTENITE GRAIN-SIZE; HIGH-STRENGTH STEELS; RETAINED AUSTENITE; START TEMPERATURE; STAINLESS-STEEL; ALLOYED STEELS; CARBON; MICROSTRUCTURE;

D O I：

10.1016/j.msea.2017.05.030

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effects of Ni addition on the austenite stability and mechanical properties of quenched and partitioned Fe-0.3%C-1.5%Mn-1.5%Si steel were investigated by means of micrograph observation, x-ray analysis, tensile testing, and hardness measurement. The Ni addition lowered the martensite start temperature and the partitioning temperature to achieve the maximum retained austenite fraction. The increase in Ni content brought about grain refinement and an increase of the retained austenite fraction in the quenched and partitioned specimens. A simultaneous improvement of both tensile strength and total elongation was observed in the Ni-added specimens. The stability of the retained austenite increased with the Ni addition, resulting in retarded kinetics of the strain-induced martensite transformation during deformation. The variation of the retained austenite fraction as a function of the tensile strain was quantitatively evaluated by using an equation considering the austenite stability factors.

引用

页码：183 / 190

页数：8

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