Affiliation:
1. National Taiwan University of Science and Technology
Abstract
In this investigation, the effects of different heat treatment conditions on the mechanical properties of high carbon tool steel (SK2) were explored. Experimental results indicated that immediately doing deep cryogenic treatment can effectively reduce retained austenite after quenching. The moment of the holding time for the cryogenic treatment was extended can promote the fine carbides precipitated, and thus increased its hardness. The results of X-ray diffraction showed that the carbides in the matrix included Fe3C and Fe7C3.The wear test results demonstrated that the specimen with Q-T1hr-C24hr-T1hr treatment has the highest wear resistance than the others, which was caused by the effect of several tempering processes to improve toughness of the matrix and to precipitate considerable quantities of the fine carbides.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference6 articles.
1. Lal, D. Mohan, S. Renganarayanan, and A. Kalanidhi. Cryogenic treatment to augment wear resistance of tool and die steels. ,Cryogenics 41.3 (2001): 149-155.
2. Collins, D. N. Deep Cryogenic Treatment of Tool Steels; a Review., Heat treatment of metals 2 (1996).
3. Akhbarizadeh, A., A. Shafyei, and M. A. Golozar. "Effects of cryogenic treatment on wear.
4. Chowdhury, ASM Fahim, D. Mari, and R. Schaller. Analysis of transient mechanical loss due to thermal stresses in metal matrix composites. ,Materials Science and Engineering: A 521 (2009): 310-313.
5. Horst C. Tribology : a systems approach to the science and technology of friction, lubrication and wear, Amsterdam, Elsevier Scientific Pub. Co., New York, (1978).