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JWJ > Volume 32(4); 2014 > Article
Journal of Welding and Joining 2014 August;32(4) :372-376.
Published online August 30, 2014.
doi:https://doi.org/10.5781/JWJ.2014.32.4.34
The Effect of Fatigue Strength according to Carburizing Depth
Hyun Min Choi*, Yong Ha Park**, Yong Taek Shin***, Myung Hyun Kim*
*Dept. of Naval Architecture and Ocean Engineering, Pusan National University, Busan 609-735, Korea
**Dept. of Materials Research, Samsung Heavy Industries Co., Ltd, Geoje-si, Gyungnam 656-710, Korea
***Dept. of Materials Science and Engineering, Donga University, Busan 604-714, Korea
Correspondence: Myung Hyun Kim  Email: kimm@pusan.ac.kr
  Published online August 30, 2014
ABSTRACT
Carburizing treatments are the important way to developing fatigue strength and wear resistance. It is well known that the case depth is one of the most significant parameters determining fatigue strength. In this study, 3-point bending fatigue test was conducted to evaluate fatigue strength for the carburized depth with 18CrNiMo7-6 steel. As a result, fatigue strength increased with effective case depth decreased. It is shown that hardness in case hardened layer played principal role in the fatigue strength.
Keywords: Fatigue strength | 3-Point bending fatigue test | Carburized steel
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