Effect of Deep Cryogenic Heat Treatment on the Wear Behavior of Carburized DIN 1.7131 Grade Steel
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The effects of the deep cryogenic heat treatment on the microstructural changes, wear resistance, and hardness of carburized DIN 1.7131 grade steel were investigated. Results show that cryogenic heat treatment reduced the retained austenite and increased the carbide amount. In addition, after the cryogenic heat treatment, carbide shows a more uniform distribution, as compared to the conventionally treated ones. It was also clarified that the hardness of the cryogenically treated samples was improved, but the relative improvement decreases with the distance as the surface increases. It has been shown that the wear resistance improves due to the cryogenic heat treatment, and the predominant wear mechanism is a combination of the adhesive and tribo-chemical wear.
KeywordsDIN 1.7131 grade steel Carburized steel Hardness Deep cryogenic heat treatment Tribo-chemical wear
The authors are thankful to the Majlesi Branch, Islamic Azad University for the support of this work.
- D. Collins, Heat Treat. Met. (UK) 23, 40 (1996)Google Scholar
- P. Cohen, D. Kamody, Cut. Tool Eng. 50, 46 (1998)Google Scholar
- K.E. Moore, N. Collins, Key Eng. Mater. 86–87, 47 (1993)Google Scholar
- ASTM, Standard Practice for X-Ray Determination of Retained Austenite in Steel with Near Random Crystallographic Orientation (ASTM International, West Conshohocken, 2013)Google Scholar