金属学报  1985, Vol. 21 Issue (4): 63-152

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充氢α-Ti多晶体中裂纹的萌生和扩展

尹万全;苏会和;徐永波;秦荣士;刘民治

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

CRACK NUCLEATION AND PROPAGATION IN HYDROGENATED POLYCRYSTALLINE α-Ti

YIN Wanquan;SU Huihe;XU Yongbo;QIN Rongshi;LIU Minzhi Institute of Metal Research;Academia Sinica;Shenyang

尹万全;苏会和;徐永波;秦荣士;刘民治. 充氢α-Ti多晶体中裂纹的萌生和扩展[J]. 金属学报, 1985, 21(4): 63-152.
, , , , . CRACK NUCLEATION AND PROPAGATION IN HYDROGENATED POLYCRYSTALLINE α-Ti[J]. Acta Metall Sin, 1985, 21(4): 63-152.

摘要 参考文献 相关文章 Metrics 全文: PDF(1930 KB)   摘要: 用S_4-10扫描电镜的拉伸装置研究:1.α-Ti多晶体中含氢量与生长氢化物量的关系.2.充氢的α-Ti多晶体中氢化物对裂纹的萌生与扩展路径的影响.3.氢化物在形变过程中的行为.结果表明,充氢的α-Ti多晶体中生成氢化物量随含氢量增加而增多.裂纹萌生和扩展与氢化物的尺寸和分布密度有关. Abstract：The hydrogenated polycrystalline α-Ti was in situ observed under SEM toobtain a better understanding of its tensile fracture microprocess,principally,ofthe correlation of contents between overall H_2 and hydride,of the effect of hy-dride on the crack nucleation and propagation,as well as of the behaviour ofthe deformation and fracture microprocess caused by hydride.It was found that:(1)The crack nucleation in the polycrystalline α-Ti with H_2 content less than152 ppm is irrelevant in the hydride.It is ductile cracking and conforms to theslip mechanism.While its H_2 content more than 727 ppm,it is brittle cracking,controlled by the hydride and belongs to the nonslip mechanism;(2)In α-Ti withlower H_2 content,the transgranular crack propagation along a zigzag pathforward is controlled by maximum shear stress.On the contrary,in α-Ti withhigher H_2 content,the crack is intergranularly propagated still along a zigzagpath forward,yet lost its ductile feature. 收稿日期: 1985-04-18      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 尹万全 苏会和 徐永波 秦荣士 刘民治 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1985/V21/I4/63 1 Minoru Nishigaki;Akiyoshi Tanabe;Yoshimasa Ito;Yasuo Moriguchi,Titanium'80,Proc.of 4th Int.Conf.on Titanium,Eds.Kimura,H.;Izuoni,O,Kyoto Jpn.,1980,p.1663． 2 Beevers,C.J.,The Science Technology and Application of Titanium,Eds.Jaffee,R.I.;Promisel,N.E.,Pergaman,London,1970,p.535． 3 Paton,N.E.;Willians,J.C.,Hydrogen in Metals,Proc.of an Int.Conf.on the Effects of Hydrogen on Materials Properties and Selection and Structural Design,23-27 Sept.1973,Pennsylvania,Eds.Bemstein,I.M.;Thompson,A.W.,ASM,p.409． 4 徐永波;穆在勤;刘民治;杨淑华,科学通报,26(1981) ,1356． 5 Castaing,R.,Advance in Electronics and Electron Physics,Vol.13,Eds.Marton,L.,Academic Press,New York and London,1960,p.338． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed