Acta Metall Sin  1998, Vol. 34 Issue (8): 864-869    DOI:

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CYCLIC STRAIN HARDENING AND SATURATION OF [■12]DOUBLE-SLIP-ORIENTED COPPER SINGLE CRYSTALS

LI Xiaowu; WANG Zhongguang;LI Shouxin (State Key Laboratory for Fatigue and Fracture of Materials; Institute of Metal Research; The Chinese Academyof Sciences; Shenyang 110015)Correspondent: LI Xiaowu; Tel: (024)23843531-55925; Fax: (024)23891320;E-mail: rwli imr.ac. cn

LI Xiaowu; WANG Zhongguang;LI Shouxin (State Key Laboratory for Fatigue and Fracture of Materials; Institute of Metal Research; The Chinese Academyof Sciences; Shenyang 110015)Correspondent: LI Xiaowu; Tel: (024)23843531-55925; Fax: (024)23891320;E-mail: rwli imr.ac. cn. CYCLIC STRAIN HARDENING AND SATURATION OF [■12]DOUBLE-SLIP-ORIENTED COPPER SINGLE CRYSTALS. Acta Metall Sin, 1998, 34(8): 864-869.

Abstract References Related Articles Recommended Metrics Download:  PDF(1487KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Cyclic strain hardening and saturation behavior of double - slip - oriented single Crystals were investigated at constant plastic shear strain amplitude (γpl) in the range of 1.3×10-4－7.2×10-3. For γpl ＜ 2×10-3, the initial hardening rates θ0.2 are low and almost independent of γpl. For γpl＞ 2×10-3, θ0.2 increases notably with increasing γpl. The cyclic stress-strain (CSS) curve of crystal exhibits a clear plateau region over the plastic strain range of 5. 0 × 10 -4－4.0×10 -3, which is shorter than that of the single slip crystal (6.0×10-5－7.5× 10-3) although the saturation shear stresses are nearly the same. Even though the orientations of and crystals are on the same 001/111 boundary in the standard stereographic triangle, their cyclic deformation behaviors are quite different, such difference is mainly attributed to the rather different slip deformation characteristics induced by the different geometrical relationships between crystal orientations and corresponding slip systems for these two crystals. Key words:  copper single crystal      double slip      cyclic strain hardening and saturation      cyclic stress-strain curve      Received:  18 August 1998      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1998/V34/I8/864 1 Laird C,Charsley P,M:mughrabi H.Mater Sci Eny,1986;81:433 2Basinski Z S, Basmski S J. Prog Mater Sci 1992; 36: 89 3 Chung Y D,Margolin H.metall Trans ,1973;4:1905 4Jin N Y, Winter A T. 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Simulation Of Internal~ Stresses~ Near The Surface And Fatigue Crack Nucleation For A Copper Single Crystal In Cyclic Deformation Saturation Stage[J]. 金属学报, 2005, 41(1): 9-. [3] YANG Jihong; JIA Weiping; LI Shouxin. Observation Of The Dislocation Structure In [013] Copper Single Crystal During Corrosion Fatigue In Nacl Aqueous Solution[J]. 金属学报, 2004, 40(1): 99-102 . [4] (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 CRYSTALS Ⅱ. Surface Slip Features and Deformation Bands[J]. 金属学报, 1998, 34(5): 552-560. [5] 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. [6] Gong Bo;Chen Daolun; Su Huihe; Wang Zhongguang(State Key Laboratory for Fatigue and Fracture of Materials; Institute of Metal Research; Chinese Academy of Sciences; Shenyang 110015). DIRECT OBSERVATION OF DISLOCATION STRUCTURE IN DEFORMED MATERIALS BY SEM──Dislocation Structure in a Fatigued [001] Cu Single Crystal[J]. 金属学报, 1997, 33(6): 561-565. [7] GONG Bo; WANG Zhongguang; ZHANG Yiwei; LI Guangyi; ZHANG Tianyi(State Key Laboratory for Fatigue and Fracture of Materials; Institute of Metal Research; Chinese Academy of Sciences; Shenyang)(Manuscript received 16 March; 1994). CYCLIC DEFORMATION BEHAVIOUR OF Cu SINGLE CRYSTAL ORIENTED FOR DOUBLE SLIPS Ⅰ. Cyclic Hardening and Saturation[J]. 金属学报, 1994, 30(10): 431-438. [8] GONG Bo; WANG Zhongguang; ZHANG Yiwei; LI Guangyi; ZHANG Tianyi(State Key Laboratory for Fatigue and Fracture of Materials; Institute of Metal Re-search; Chinese Academy of Sctences; Shenyang)(Manuscript received 16 March; 1994). CYCLIC DEFORMATION BEHAVIOUR OF Cu SINGLE CRYSTALS ORIENTED FORDOUBLE SLIP Ⅱ. Persistent Slip Bands and Deformation Bands[J]. 金属学报, 1994, 30(10): 439-447. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed