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Materials and Manufacturing Processes Volume 29, 2014 - Issue 6
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Original Articles

A New Type of Quenching and Partitioning Processing Developed from Martensitic Pre-microstructure

Ran Ding Engineering Research Institute, University of Science and Technology Beijing, Beijing, People's Republic of China; Beijing Laboratory of Metallic Materials and Processing for Modern Transportation, Beijing, People's Republic of China; National Engineering Research Center of Advanced Rolling, Beijing, People's Republic of China
,
Di Tang Engineering Research Institute, University of Science and Technology Beijing, Beijing, People's Republic of China; Beijing Laboratory of Metallic Materials and Processing for Modern Transportation, Beijing, People's Republic of China; National Engineering Research Center of Advanced Rolling, Beijing, People's Republic of ChinaCorrespondence[email protected]
,
Aimin Zhao Engineering Research Institute, University of Science and Technology Beijing, Beijing, People's Republic of China; Beijing Laboratory of Metallic Materials and Processing for Modern Transportation, Beijing, People's Republic of China; National Engineering Research Center of Advanced Rolling, Beijing, People's Republic of China
,
Rui Dong Engineering Research Institute, University of Science and Technology Beijing, Beijing, People's Republic of China
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Junye Cheng Engineering Research Institute, University of Science and Technology Beijing, Beijing, People's Republic of China
&
Xinyu Zhang Engineering Research Institute, University of Science and Technology Beijing, Beijing, People's Republic of China
Pages 704-709 | Received 24 Oct 2013, Accepted 07 Mar 2014, Published online: 03 Jun 2014
 
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Abstract

A new type of quenching and partitioning steels using martensitic microstructure prior to the quenching and partitioning process was developed. High tensile strength with large total elongation was obtained, leading to superior mechanical properties. The difference between the new type and conventional quenching and partitioning steels was studied. Excellent mechanical properties were attributed to the high volume fraction of total retained austenite, considerable amount of acicular retained austenite and the plasticization of ferrite laths.

Notes

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