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摘要：
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为预测合金钢的延性破裂和变形极限， 本文针对静水应力对金属材料内部微孔表面能的影响， 静水应力和应力偏量对内部微孔扩展的影响， 提出了合金钢冷锻时的理论破裂准则， 并通过压缩实验得到验证。
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基金项目：
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作者简介：
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参考文献：
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1 WeiHuatai. A New Dam age Mechanics Criterion forDuctile Frac-ture. Engineering Fracture Mechanics, 1987, 27 (4): 371～378
2 W eiHuatai. A New M icrovoid-Dam age M odel for Ductile Frac-ture. Engineering Fracture Mechanics, 1986, 25 (3): 377～384
3 Osakada K. The Anisotropy of Ductility in carbon steel. Bulletinof JSME, 1983, 26 (222): 2067～2072
4 SekiguchiH, Osakada K, Criterion ofductile Fracture of CarbonSteelfor Predicting Cold Forging Lim it, Advanced Technology ofPlasticity, 1984, 2: 851～856
5 Zhou Shineng, Chen Zhim ing, The Research ofCriterion of Form -ing Lim itin Cold forging.Proceeding ofJapan-Ching JointSym po-sium on cold Forging, 1987: 17～20.
6 Sow erby R.The Cold Upsetting and Free Surface Ductlity ofsom eCom m orcialSteels, J, of Appl. Metalw ork, 1984, 3 (3): 257～263
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