Reheat treatment: effects in supermartensitic stainless stell

International Journal of Development Research

Volume: 
10
Article ID: 
19993
5 pages
Research Article

Reheat treatment: effects in supermartensitic stainless stell

Gabriel Maschio, André Zimmer and Cinthia Gabriely Zimmer

Abstract: 

Heat re-treatment of metals to obtain a specific hardness is a common industrial practice. Hardness, sometimes, is the only parameter on quality control to approve the heat treatment efficacy. This investigation analyses a sequence from one to seven heat re-treatment, and its influence on the microstructure and mechanical properties of the 13Cr supermartensitic stainless steel. Metallographic analysis, tensile and Charpy impact tests were conducted in specimens reprocessed seven times by quenching and tempering. Microstructure examinations showed the grain refinement and nonlinear variation of the volume fraction of retained austenite. Mechanical resistance was improved until the fifth re-treatment. The best relation between all properties was available in the fourth cycle.

DOI: 
https://doi.org/10.37118/ijdr.19993.09.2020
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