COMPARISON BETWEEN CYCLIC DEFORMATION BEHAVIORS OF NON-ISOAXIAL COPPER TRICRYSTAL AND BICRVSTAL
JIA Weiping; LI Shouxin; WANG Zhongguang; LI Xiaowu; LI Guangyi(State Key Laboratory for Fatigue and Fracture of Materials; Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110015)
Cite this article:
JIA Weiping; LI Shouxin; WANG Zhongguang; LI Xiaowu; LI Guangyi(State Key Laboratory for Fatigue and Fracture of Materials; Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110015). COMPARISON BETWEEN CYCLIC DEFORMATION BEHAVIORS OF NON-ISOAXIAL COPPER TRICRYSTAL AND BICRVSTAL. Acta Metall Sin, 1998, 34(7): 696-704.
Abstract The cyclic hardening and saturation behaviors of copper tricrystal and bicrystal were investigated by using successively increasing amplitude method. The results show that, to the inclined grain boundary bicrystal with single slip components, the cyclic stress strain curve (CSSC) ealsts a plateau or quasi-plateau region, while the CSSC of tricrystal shows no plateau.Observation of surface morphologies indicated that owing to the strain incompatibility of three grains, at lower strain amplitude the triple junction retards obviously the primary slip in grains and makes deformation near it smaller than that near bicrystal junction. The eastness of crack initiation at the same triple junction is closely related to loading direction.
1 Mughrabi H. Mater Sci Egg, 1978; 33: 207 2 Jin N Y, Winter A T. Acta Metall, 1984; 32: 989 3 Gong Bo, Wang Zhirui, Wang Zhongguang. Acta Mater, 1997; 45: 1365 4 Hu Y M, Wang Z G, Li G Y. Mater Sci Eng, 1996; A208: 260 5 Hu Y M, Wang Z G. Acta Mater, 1997; 45: 2655 6 Liu C D, You D X, Bassim M N. Acta Metall Mater, 1994; 42: 1631 7 Rasmussen K V, Pedersen O B. Acta Metall, 1980; 28: 1467 8 Winter A T, Pedersen O B, Rasmossen K V. Acta Metall, 1981; 29: 735 9 Onaka S, Tajima F, Hashimato S, Miura S. Acta Metall Mater, 1995; 43: 307 10 Randle V. Acta Metall Mater, 1995; 43: 1741 11 Sisanbaev A V, Valley R J. Acta Metall Mater, 1992, 40: 3349 12 Jia Weiping, Li Shouxin, Wang Zhongguang, Li Guangyi. In: Luitjering G, Nowack H eds., Fatigue'96,Proc 6th Int Fatigue Congress, Vol. I, Berlin: Pergamon, 1996: 161 13 Livingston J D, Chalmers B. Acta Metall, 1957; 5: 322 14 Rey C, Zaoui A. Acta Metall, 1980; 28. 687
ZHANG Zhefeng; WANG Zhongguang; SU Huihe(State Key Laboratory for Fatigue and Fracture of Materials; Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110015)Correspondent: ZHANG Zhefeng Tel: (024)23843531-55225; Fax: (024)23891320. CYCLIC DEFORMATION BEHAVIOR OF A COPPER BICRYSTAL WITH A PERPENDICULAR GRAIN BOUNDARY[J]. 金属学报, 1998, 34(8): 841-846.
LI Xiaowu; WANG Zhongguang; SUN Shouguang; WU Shiding;LI Shouxin;LI Guangyi (State Key Laboratory for Fatigue and Fracture of Materials; Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110015)(Department of Mechanical Engineering; Northern Jiaotong University; Beijing 100044). CYCLIC DEFORMATION BEHAVIOR OF [011] MULTIPLE-SLIP-ORIENTED COPPER SINGLE CRYSTALSCyclic Stress-Strain Response[J]. 金属学报, 1998, 34(5): 545-551.
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I. Cyclic Deformation Behavior and Slip Morphology HU Yunming; WANG Zhongguang (State Key Laboratory for Fatigue and Fracture of Materials; Institute of Metal Research; Chinese Academy ofSciences; Shenyang 110015) (Manuscript received 1996-09- 12; in revised form 1997-03-07). CYCLIC DEFORMATION BEHAVIOR AND FATIGUE CRACK INIT1ATION IN COPPER BICRYSTALS[J]. 金属学报, 1997, 33(8): 814-823.
