Transactions of Materials and Heat Treatment

Title：Prediction of thermal fatigue crack initiation cycles of die for high speed hot die forging

Authors： Shanghai Jiaotong University Liu Jiantao Ruan Xueyu Shanghai University Wang Li Liu Yikuan Shanghai Automobile Forging Works Tan Zhenhua Lu Wenyuan

Unit：

KeyWords： High speed hot die forging Die Thermal fatigue crack Initiation cycles

ClassificationCode：TG315

year,vol(issue):pagenumber：1997,22(5):50-52

Abstract：

Based on taking material properties and working condition into account of die for high speed hot die forging, this paper derived an equation used for thermal fatigue crack initiation cycles from well known Coffin Mansion equation and predicted thermal fatigul crack initiation cycles of die for high speed hot die forging. The prediction results tallied with experimental results.

Funds：

国家自然科学基金!资助项目 (5 96 75 0 49)

Reference：

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2　CA多夫拉尔热模锻模具强化和破坏的热力学北京 :国防工业出版社 ,1988:34
3　赖祖涵断裂力学原理北京 :冶金工业出版社 1990 :16 5
4　SMalmandL - oA Norstr¨om .Material ralatedmodelforthermalfatigueappliedtotoolsteelsinhot workapplications.MetalScience,1979,13 (9) :5 44～ 5 5 0

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