冷作模具钢DC53断裂性能研究Fracture properties of cold working die steel DC53
张峪铭;罗远新;陈世磊;
摘要(Abstract)：
针对冷作模具钢DC53的断裂失效情况,开展断裂韧度及疲劳裂纹扩展试验,获得材料断裂性能参数。基于线弹性断裂力学理论,运用三维断裂分析软件FRANC3D模拟计算含有穿透型裂纹的标准紧凑拉伸CT试样的裂纹前缘应力强度因子,由Paris公式计算裂纹扩展寿命,并将理论计算、数值模拟和断裂力学试验进行对比研究。结果表明:数值模拟、理论计算以及试验得到的裂纹扩展寿命在16.7%的合理误差范围内。
关键词(KeyWords)： 冷作模具钢;DC53;断裂力学;裂纹扩展
基金项目(Foundation): 国家自然科学基金(51405044);; 机械传动国家重点实验室特色项目(SKLMT-ZZKT-2015T01)
作者(Author): 张峪铭;罗远新;陈世磊;
Email:
DOI: 10.14024/j.cnki.1004-244x.20171221.001
参考文献(References)：
- [1]中国模具工业协会.模具行业“十二五”发展规划[J].模具工业,2011,37(1):1-2.
- [2]徐进,陈再枝.模具材料应用手册[M].北京:机械工业出版社,2004:178-183.
- [3]CHIU L H,LIAO H C.Carbide distribution effect on wear behavior of cold work tool steels[J].Metallurgy Technology and Materials,2012,576:240.
- [4]WEN D C.Erosion and wear behavior of nitrocarburized DC53tool steel[J].Wear,2010,268(3/4):629-636.
- [5]LEE Y C,CHEN F K.Fatigue life of cold-forging dies with var-ious values of hardness[J].Journal of Materials ProcessingTechnology,2001,113(1/3):539-543.
- [6]並木邦夫.模具材料性能与应用[M].北京:机械工业出版社,2014:75-80.
- [7]RAJU I S,Jr J C N.Stress-intensity factors for a wide range ofsemi-elliptical surface cracks in finite-thickness plates[J].En-gineering Fracture Mechanics,1979,11(4):817-829.
- [8]IRWIN G R.Analysis of stresses and strains near end of acrack traversing a plate[J].J Appl Mech,1956,24:361-364.
- [9]ERDOGAN F,SIH G C.On the crack extension in plates un-der plane loading and transverse shear[J].J Basic Eng-TASME,1963(4):519-25.
- [10]钟群鹏,赵子华,张峥.断口学的发展及微观断裂机理研究[J].机械强度,2005,27(3):358-370.
- [11]PARIS P C,ERDOGAN F.A Critical analysis of crack propagation law[J].Journal of Basic Engineering,1963,85(4):528-533.