金属学报  1983, Vol. 19 Issue (4): 57-147

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加载方向对γ/γ′-α-Mo定向共晶瞬时拉伸性能的影响

张静华;张玉生;张志亚;徐永波;唐亚俊;胡壮麒

中国科学院金属研究所;中国科学院金属研究所;中国科学院金属研究所;中国科学院金属研究所;中国科学院金属研究所;中国科学院金属研究所

OFF-AXIS TENSILE PROPERTIES OF γ/γ'-α-Mo DS EUTECTIC

by ZHANG Jinghua; ZHANG Yusheng; ZHANG Zhiya; XU Yongbo; TANG Yafun; HU Zhuangqi (Institute of Metal Research; Academia Sinica; Shenyang) (Manuscript received 20 August; 1982)

张静华;张玉生;张志亚;徐永波;唐亚俊;胡壮麒. 加载方向对γ/γ′-α-Mo定向共晶瞬时拉伸性能的影响[J]. 金属学报, 1983, 19(4): 57-147.
, , , , , . OFF-AXIS TENSILE PROPERTIES OF γ/γ'-α-Mo DS EUTECTIC[J]. Acta Metall Sin, 1983, 19(4): 57-147.

摘要 参考文献 相关文章 Metrics 全文: PDF(4445 KB)   摘要: γ/γ′-α-Mo定向共晶具有良好的力学性能,特别是在垂直于生长方向上,尚有一定塑性。本文研究了加载方向对瞬时拉伸性能的影响。当加载方向偏离生长方向时,瞬时拉伸强度和塑性随之下降。即使在加载方向垂直于生长方向时,断裂强度仍在900MN/m~2以上,延伸率也能保持在3％左右。在动态拉伸过程中,观察到两种断裂形式:纤维本身的断裂和纤维与基体界面的开裂。在范性形变出现以后,基体的滑移可以通过α-Mo纤维。一般是较粗的纤维首先断裂,纤维与基体界面的开裂是导致试样最后断裂的主要原因。 Abstract：A study was made of the off-axis tensile properties of γ/γ'-a-Mo DS eutectic and of observation of the dynamic fracture process by SEM. If the loading direction deviates from the Mo fibre growth direction, the tensile strength and ductility decrease gradually. During the loading process, two types of cracking are observed: one is cracking of the fibre, and the other is delamination along the fibre-matrix interface. In plastic deformation, slip can pass through both the matrix and the fibre. As a rule, the thicker fibers are cracked earlier than the thinner ones, because they have less defects and better ductility. Delamination is the main source of final fracture. 收稿日期: 1983-04-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 张静华 张玉生 张志亚 徐永波 唐亚俊 胡壮麒 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1983/V19/I4/57 1 Lemkey, F. D., Superalloys: Metallurgy and Manufacture, Proc. of the 3rd Int. Symp. on Superalloys, Eds. Kear, B. H.; Muzyka, D. R; Tien, J. K., et al., Claitor's Publ., Baton Rouge, 1976, p. 137． 2 Henry, M. F.; Jackson, M. R.; Gigliotti, M. F. X.; Nelson, P. B., NASA CR-159 416, (1979) . 3 Henry, M. F.; Jackson, M. R.; Walter, J. L., NASA CR-135 151, (1978) . 4 Nakagawa, Y. G.; Ohotomo, A.; Saiga, Y., Superalloys, Proc. of the 4th Int. Symp. on Superalloys, (1980) , Eds. Tien, J. K.; Wlodek, S. T.; Morrow, H. Ⅲ, et al., ASM, Metal Park, Ohio, 1980, p. 267． 5 Sprenger, H.; Richter, H.; Nickl, J. J., J. Mater. Sci., 11 (1976) , 2075． 6 Stoloff, N. S., Advances in Composite Materials, Ed. Piatti, G., London, Appl. Sci. Publ., 1978, p. 247． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed