Acta Metall Sin  1987, Vol. 23 Issue (6): 447-456    DOI:

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INTERACTION OF GRAIN BOUNDARIES WITH DISLOCATIONS AT INITIAL STAGE OF PLASTIC DEFORMATION IN HIGH PURITY Al

by LIN Dongliang (T. L. Lin); ZHAO Linruo; CHEN Xionfen(Shanghai Jiaotong University)(Manuscript received 17 October; 1985; revised manuscript 5 April; 1986).

by LIN Dongliang (T. L. Lin); ZHAO Linruo; CHEN Xionfen(Shanghai Jiaotong University)(Manuscript received 17 October; 1985; revised manuscript 5 April; 1986).. INTERACTION OF GRAIN BOUNDARIES WITH DISLOCATIONS AT INITIAL STAGE OF PLASTIC DEFORMATION IN HIGH PURITY Al. Acta Metall Sin, 1987, 23(6): 447-456.

Abstract References Related Articles Recommended Metrics Download:  PDF(2879KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Static tensile tests for 99.999%Al with two grain sizes were conducted with strain rates of 10~(-6) to 10~(-4)S~(-1) and temperatures of-150 to+250℃. The slip traces, the topography near the grain boundary on the surface of tensile specimens and the structure of dislocations were observed hy means of optical microscope and TEM. The results show that the strain hardening reduces with increase of temperature and decrease of strain rate, and it depends upon the interaction between grain boundaries and dislocations which are controlled by both temperature and strain rate. The hardening coefficient A as a function of deformation temperature T, strain rate e and grain size d was derived. (A/G)-T, (A/G)-ε and (A/G)-d curves were computed and compared with experimental data, where G is shear stress. Received:  18 June 1987      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/Y1987/V23/I6/447 1 Fujita H, Toyoda K, Mori T, Tabata T, Ono T, Takeda T. Trans Jpn Inst Met, 1983; 24: 195 2 Dingley D J, Pond R C. Acta Metall, 1979; 27: 667 3 Murr L E, Horylev R J, Lin W N. Philos Mag, 1970; 22: 515． 4 Murr L E. Metall Trans, 1975; 6A: 505 5 Lin T L, Mclean D. Met Sci J, 1968; 2: 108 6 陈贤芬,林栋梁.金属学报,1984;20:A169 7 Grabski M W, Wyrzykowski J W. Mater Sci Eng, 1980; 44: 229 8 Ishida Y, Hasegawa T, Nagata F. Trans Jpn Inst Met, 1968; 9: 504 9 Ishida Y. Trans Jpn Inst Met, 1970; 11: 107 10 Pumphrey P H, Gleiter H. Philos Mag, 1974; 30: 593 11 Pond R C, Proc R Soc London, 1977; 357: 471 12 King A H, Smith D A, Philos Mag, 1980; A42: 495 13 Pond R C, Smith D A. Philos Mag, 1977; 36: 353 14 Li J C M, Chen Y T. Metall Trans, 1970; 1: 1145 15 Ashby M F. Philos Mag, 1970; 21: 399! No related articles found! No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed