Paper Title:
Thermal Fatigue Behavior of the Surface Treated Hot Die Steel Depending on Test Temperature
  Abstract

The influence of thermal fatigue test temperature on crack propagation behavior of the surface treated tool steel for die-casting was investigated. For this purpose, thermal fatigue system consisted of induction heating and water spray quenching unit was constructed to simulate the service condition and Lm is proposed as the index representing the susceptibility to crack initiation and propagation. The thermal fatigue tests were conducted at the maximum temperature of 600°C, 700°C and 720°C using as-heat treated or nitrided specimens. The ion nitrided specimen showed lower Lm value than as-heat treated at all test temperature. But in the case of maximum and average crack length, the ion nitrided specimen exhibited higher value than those of as-heat treated specimen.

  Info
Periodical
Materials Science Forum (Volumes 449-452)
Edited by
S.-G. Kang and T. Kobayashi
Pages
869-872
DOI
10.4028/www.scientific.net/MSF.449-452.869
Citation
Y. M. Rhyim, K. T. Youn, W. D. Yoo, Y. S. Na, J.H. Lee, "Thermal Fatigue Behavior of the Surface Treated Hot Die Steel Depending on Test Temperature", Materials Science Forum, Vols. 449-452, pp. 869-872, 2004
Online since
March 2004
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Price
$32.00
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