Acta Metall Sin  1998, Vol. 34 Issue (6): 561-564    DOI:

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THE BEHMAVIORS OF (1/2)〈110] DISLOCATIONS IN γ-TiAl SINGLE CRYSTALS

WU Doughai; HU Gengxiang(Department of Materials Science; Shanghai Jiaotong University; Shanghai 200030INUI Haruyuki; YAMAGUCHI Masaharu)(Kyoto University; Faculty of Engineering; Kyoto 606--01; JapanCorrespondent : HU Gengxiang; professor Tel: (O21)62812558; Fax. (021)62820892)

WU Doughai; HU Gengxiang(Department of Materials Science; Shanghai Jiaotong University; Shanghai 200030INUI Haruyuki; YAMAGUCHI Masaharu)(Kyoto University; Faculty of Engineering; Kyoto 606--01; JapanCorrespondent : HU Gengxiang; professor Tel: (O21)62812558; Fax. (021)62820892). THE BEHMAVIORS OF (1/2)〈110] DISLOCATIONS IN γ-TiAl SINGLE CRYSTALS. Acta Metall Sin, 1998, 34(6): 561-564.

Abstract References Related Articles Recommended Metrics Download:  PDF(1836KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The main deformation mode for [021]-oriented γ-TiAl single crystals in thetemperature range of -196 -1000 ℃ has been identified to be {111}(110] ordinary dislocationslip. At low temperatures, (1/2)(110] ordinary dislocations are mostly parallel to their screworientation or 60° with respect to screw orientation and tend to be arranged in groups. Whilein the anomalous yield temperature range, (1/2)(110] ordinary dislocations are mostly parallelto their screw orientation and are heavily cusped. The number of these cusps increases withincreasing temperature. Above the peak temperature, ordinary dislocations do not exhibit allypreferable orientation and tend to move out of their primary slip plane by climbing. Key words:  γ-TiAl single crystal      ordinary dislocation      cusp      anomalous yield behavior      Received:  18 June 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/I6/561 1 Yamagucbi M,Umakoshi Y.Prog Mater,Sci,1990;34:1 2 Paidar V, Pope D P, Vitek V. Acta Metall, 1984; 32: 435 3 Hirsch P B. Philos Mag 1992; A65: 569 4 吴东海.上海交通大学博士学位论文,1996 (Wu DH.Doctor thesis ,Shanghai Jiaotong University 1996) 5 Simmone J P, Rao S I, Dimiduk D M. In: Stocks G M, Turchi PEA eds. Warrendale, Penn. MRS: Alloy Modelliny and Design 1994:183 6 Cohen J B, Fine M E、 J Phys Radium, 1962; 23: 749 7 Viguier B, Hemker K, Bonneville J, Louchet F, Martin J L. Philoa Mag 1995; A71: 1295 [1] WU Donghai;HU Gengxiang (Department of Materials Science; Shanghai Jiaotong University; Shanghai 200030)INUI Haruyuki; YAMAGUCHI Masaharu (Kyoto University; Kyoto 606-01; Japan). DEFORMATION BEHAVIOR OF γ-TiAl SINGLE CRYSTALS AT DIFFERENT TEMPERATURES[J]. 金属学报, 1998, 34(1): 39-44. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed