Modifying microstructure and property of 30CrMnSi steel by subcritical austenite reverse transformation quenching

Authors

  • Anming Li Henan Polytechnic University

Keywords:

austenite inverse phase, transformation, subcritical quenching, tensile strength, hardness, microstructure

Abstract

Subcritical austenite reverse transformation quenching was used to improve the mechanical properties of 30CrMnSi steel, and the microstructure and mechanical properties of the samples were analyzed by subcritical austenite reverse transformation quenching. Experimental results show that subcritical reverse transformation quenching can refine the austenite grains of the 30CrMnSi steel. Lath-shaped martensite can be obtained after quenching. Ferrite is exited in the martensite lath when quenching temperature is low. When quenching temperature is higher than 840?, ferrite disappears and only lath-shaped martensite can be observed. The subcritical austenite reverse transformation quenching at 840? can effectively improve the strength and hardness, which is higher than that of the sample by conventional quenching at 870 ?.

Author Biography

Anming Li, Henan Polytechnic University

school of materials science and engineering

Downloads

Published

2015-05-27

Issue

Engineering Review, Vol. 35, No. 2

Section

Articles

License

Engineering review uses the Creative Commons Attribution-NonCommercial-NoDerivatives (CC-BY-NC-ND) 4.0 International License, which governs the use, publishing and distribution of articles by authors, publishers and the wider general public.

The authors are allowed to post a digital file of the published article, or the link to the published article (Enginering Review web page) may be made publicly available on websites or repositories, such as the Author’s personal website, preprint servers, university networks or primary employer’s institutional websites, third party institutional or subject-based repositories, and conference websites that feature presentations by the Author(s) based on the published article, under the condition that the article is posted in its unaltered Engineering Review form, exclusively for non-commercial purposes.

The journal Engineering Review’s publishing procedure is performed in accordance with the publishing ethics statements, defined within the Publishing Ethics Resource Kit. The Ethics statement is available in the document Ethics Policies.