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Vol.14, No.3, 241 ~ 250, 1976

Title

Studies on the abrasive Wear Resistance of the Austenitic High Manganese Steel

권식철 , 이재영 , 김대룡 Sik Cheoul Kwon , Jai Young Lee , Dae Yong Kim

Abstract

In order to investigate into the wear-resisting property of the austenitie high manganese steel, the wear rate per unit load (M) was measured using the wear tester manufactured to simulate the abrasive condition. Hardness of the bulk (H_B) and the abraded surface (H_(A·S)) and the metallographic structure were also studied in relation to the abrasive wear resistance of the steel. It is shown the wear rate per unit load (M) is related with each of the bulk hardness and the abraded surface hardness as follow expressions: 1) M×10^5=(14.008±1.758)-(0.0291±0.046) H_(A·S) ㎎/㎝-㎏. 2) M=2/1000(60)^(-n)×1/H_B ㎎/㎝-㎏. Where n is strain-hardening coefficient. Expression 1) is empirical while expression 2) is semiempirical formula which has a relation with the intrinsic property of the steel. On the view of microstructure of the steel, it is found the hnitial grain size (r) has no effect on the wear-resisting property of the Steel but the intercarbide spacing (d) has an marked influence on the wear-resistance. And the obtained relationship is as follow; 3) M×10^5=(5.4±0.3)-(43.0±6.07)1/√d ㎎/㎝-㎏.

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