Characterization of Microstructure and Mechanical Properties of a Nb-Microalloyed Steel after Quenching-Partitioning-Tempering Process

Xiao Dong Wang; Zheng Hong Guo; Yong Hua Rong

doi:10.4028/www.scientific.net/MSF.654-656.90

Paper Titles

Evolution of Different Recrystallization Textures in Steels Having {111}<112> Rolling Texture
p.74

Effect of Austenite on Drawing Limit of Ferrite-Austenite Dual Phase Wire
p.78

Application of Quenching-Partitioning-Tempering Process in Hot Rolled Plate Fabrication
p.82

Microstructural Evolution of Medium Carbon Steels during the Quenching and Partitioning Process
p.86

Characterization of Microstructure and Mechanical Properties of a Nb-Microalloyed Steel after Quenching-Partitioning-Tempering Process
p.90

The Effect of Mn and Si on the Properties of Advanced High Strength Steels Processed by Quenching and Partitioning
p.94

The Isothermal Transformation of Low-Alloy Low-C CMnSi Steels below M_S
p.98

Nano-Scale Analysis of Nano-Bainite Formed in Advanced High Strength Steels
p.102

Nitriding of a Nb-Microalloyed Thin Strip Cast Steel at 525°C
p.106

HomeMaterials Science ForumMaterials Science Forum Vols. 654-656Characterization of Microstructure and Mechanical...

Characterization of Microstructure and Mechanical Properties of a Nb-Microalloyed Steel after Quenching-Partitioning-Tempering Process

Abstract:

A novel heat treatment process, that is, quenching-partitioning-tempering (Q-P-T) process, has been developed as a new way to obtain ultrahigh strength martensitic structural steel containing retained austenite and alloying carbide. In order to display merit of the Q-P-T process, a medium carbon Nb-microalloyed steel is treated by Q-P-T 1-step process and Q-P-T 2-step process, as well as treated by the transformation induced plasticity heat treatment process and quenching and tempering process, respectively. The results show that Q-P-T samples possess better mechanical properties than those treated by other heat treatment processes. The origin of the good mechanical properties is analyzed based on the phase and microstructure characterization using X-ray diffraction, scanning electron microscopy and transmission electron microscopy.

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Periodical:

Materials Science Forum (Volumes 654-656)

Pages:

90-93

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.654-656.90

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Online since:

June 2010

Authors:

Xiao Dong Wang, Zheng Hong Guo, Yong Hua Rong

Keywords:

Characterization, Mechanical Property, Microstructure, Quenching-Partitioning-Tempering Process

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