Comparative study on the effect of (Cr, Mo, V)-alloying on transformation and mechanical behavior of 0.2 wt.% C TRIP-assisted steel

被引：2

作者：

Kussa, Roman A. ^{[1
]}

Zurnadzhy, Vadym, I ^{[1
]}

Dabala, Manuele ^{[2
]}

Franceschi, Mattia ^{[2
]}

Efremenko, Vasily G. ^{[1
]}

Petryshynets, Ivan ^{[3
]}

Kromka, Frantisek ^{[3
]}

Brykov, Michail N. ^{[4
]}

机构：

[1] Pryazovskyi State Tech Univ, UA-87555 Mariupol, Ukraine

[2] Univ Padua, I-35131 Padua, Italy

[3] Slovak Acad Sci, Inst Mat Res, Kosice 04001, Slovakia

[4] Zaporizhzhia Polytech Natl Univ, UA-69063 Zaporizhzhia, Ukraine

来源：

KOVOVE MATERIALY-METALLIC MATERIALS | 2022年 / 60卷 / 01期

关键词：

Key word s; TRIP-assisted steel; bainitizing; Q& austenite; mechanical properties; RETAINED AUSTENITE; MICROSTRUCTURE; BAINITE; MARTENSITE;

D O I：

10.31577/km.2022.1.31

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structure and mechanical properties of two 0.2 wt.% C TRIP-assisted steels (Transformation Induced Plasticity) were compared to evaluate the effect of additional (Cr, Mo, V)-alloying on transformation kinetic and tensile/impact behavior after isothermal bainite transformation (bainitizing) and Q&P (Quenching-and-Partitioning) treatment. The work was performed using SEM, XRD, tensile/impact testing, and computer simulation. It was found that adding 0.55 wt.% Cr, 0.2 wt.% Mo, and 0.11 wt.% V into Mn-Si-Nb steel increased the incubation time in pearlite and bainite temperature ranges by 5.6 and 4.4 times, respectively. More heavily alloyed steel performed an improved combination ???Strength/Ductility/Impact Toughness???: its maximum PSE (Product of Strength and Elongation) value of 24 GPa ?? % referred to bainitizing treatment, whereas the highest KCV20???C values (220???225 J cm???2) corresponded to Q&P treatment. Improved mechanical properties of (Cr, Mo, V)-alloyed steel were attributed to a higher amount of retained austenite and a slower rate of TRIP-effect.

引用

页码：31 / 43

页数：13

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