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자동차용 스프링강의 온도변화에 따른 피로 및 파괴인성에 관한 연구
김추용(Chu-Yong Kim),박원조(Won-Jo Park),정재욱(Jae-Wook Jung),허선철(Sun-Chul Huh) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.4
Recently, the steel parts used for automobiles and trains are required to be used under higher stress than ever before in need of the weight down. In this study, high strength and superior toughness spring steels as the suspension material, used for automobile and railroad industries were utilized to carry out the following n vestigations : 1) To evluate the characteristics of fatigue crack propagtion, the experiments of fatigue crack growth were respectively carried out at the room temperature(RT), 100℃, 200℃. 2) Peening and unpeening materials at the each temperature were investigated for the effect on fracture toughness by compressive residual stress generated from the shot peening.