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http://dx.doi.org/10.12656/jksht.2011.24.4.187

Effect of Austenitizing Temperature on Mechanical Properties in the Spheroidized Cr-Mo Steel  

Kou, D.H. (ENK Co. Ltd.)
Yoon, J.H. (NK Co. Ltd.)
Park, S.J. (ILJIN GLOVAL, R&D Center Material Team)
Kim, J.M. (Department of Metallurgical Engineering, Dong-A University)
Kang, H.J. (Department of Metallurgical Engineering, Dong-A University)
Sung, J.H. (Center for Advanced Net shape Manufacturing and Clean Process, Dong-A University)
Publication Information
Journal of the Korean Society for Heat Treatment / v.24, no.4, 2011 , pp. 187-192 More about this Journal
Abstract
Effect of austenitizing temperatures on the impact value of the AISI 4140 steel after repetition of spheroidization and cold deep drawing treatment has been studied. Sufficient dissolution of carbide was shown after austenitizing at the high temperature of $950^{\circ}C$. Accordingly, the impact value was remarkably increased by tempering of this high temperature austenitized steel at the tempering temperature ranges between $570^{\circ}C$ and $630^{\circ}C$. On the other hand, remarkable decrease in the impact values and elongations were shown by tempering the low temperature-austenitized ($870^{\circ}C$) steel due to the coarsening of undissolved-carbide existed at the austenitizing temperature.
Keywords
Cr-Mo steel; Austenitizing temperature; Homogeneous austenite; Tempering; Impact value; Carbide;
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  • Reference
1 G. E. Totten : "Steel Heat Treatment Metallurgy and Technologies" 2nd Ed., (2007), CRC Press 136, 197, 201.
2 T. V. Philip : Metals Handbook Vol. 1 "Properties and Selection: Iron and steel" ASM, (1991), 424.
3 J. R. Keough, W. J. Laird and A. D. Godding : Metals Hand Book Vol. 4, "Heat Treating", ASM, (1991), 162.
4 SAE J411, 1989 SAE Handbook "Carbon and Alloy Steels," Vol 1, Materials, Society of Automotive Engineers, 201-203
5 김용길, 김영주, 김기돈, 성장현 : 열처리공학회지, 5(2) (1992) 111.
6 J. H. G. Monypenny : Stainless Iron and Steel, 2 (1954) 33.
7 G. E. Totten, M. A. H. Howes : "Steel Heat Ttreatment Handbook" (1997), Marcel Dekker, Inc., N. Y., 609.