ENHANCEMENT OF WEAR RESISTANCE OF DIE STEEL BY DEEP CRYOGENIC TREATMENT | ||||
The International Conference on Applied Mechanics and Mechanical Engineering | ||||
Article 99, Volume 13, 13th International Conference on Applied Mechanics and Mechanical Engineering., May 2008, Page 146-158 PDF (2.16 MB) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/amme.2008.39684 | ||||
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Authors | ||||
DAS D.1; DUTTA A. K.2; RAY K. K.3 | ||||
1Senior Lecturer, Department of Metallurgy and Materials Engineering, Bengal Engineering and Science University, Shibpur, Howrah - 711103, India. | ||||
2Professor, Department of Mechanical Engineering, Bengal Engineering and Science University, Shibpur, Howrah - 711103, India. | ||||
3Professor, Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur - 721302, India. | ||||
Abstract | ||||
ABSTRACT A comparative study of the wear behavior of deep cryogenically treated vis-à-vis conventionally treated AISI D2 steel has been made to critically examine the extent of improvement in wear resistance of tool steels by cryotreatment. A series of experiments have been done to determine dry sliding wear resistance together with examinations of the worn surfaces and generated debris, characterization of the microstructures, and measurement of the hardness values of the differently heat treated steels. The obtained results unambiguously assist to infer that cryotreatment substantially improves wear resistance of D2 steel, but the extent of improvement is a strong function of the test load. These observations have been explained with appropriate identification of the operative wear mechanisms at different test conditions. Microstructural characterizations reveal that the improvement in hardness and wear resistance by cryotreatment is due to near complete removal of soft retained austenite with concurrent increase in the amount of secondary carbides and tempered martensite. | ||||
Keywords | ||||
Deep cryogenic treatment; AISI D2; Wear resistance; wear mechanisms; Microstructures | ||||
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