Department of Physics; Guangxi University; Nanning 530004
Cite this article:
DENG Wen; RUAN Xiangdong; HUANG Yuyang; ZHOU Yin'e; ZHU Yingying; ZHU Yingying. Effects Of Twin Size On The Dislocation Configuration During Cyclic Deformation Of Polycrystalline Twin Copper. Acta Metall Sin, 2005, 41(1): 33-.
Abstract Doppler--broadening spectra of positron annihilation radiation of Al, Ti, V, Cr,
Mn, Fe, Co, Ni, Cu, Zn and Ga have been measured by using 2--detector coincidence technique.
The lower background of the spectrum allows to obtain the contribution of
annihilations with core electrons. The experiments
show that the background decreases with increasing the distance between the
sample and the Ge detector. The magnitude of the peak of the ratio curve of Ni
(ratio to Al) increases with decreasing the background of the spectrum. For Ti, V,
Cr, Mn, Fe, Co, Ni and Cu, the heights of the peaks in the ratio curves rise
with increasing the number of 3d--electrons.
[1] West R N. Adv Phys, 1973; 22: 263 [2] Deng W, Xiong L Y, Wang S H, Guo J T, Long Q WActa Metall Sin, 2002; 38: 453(邓文,熊良钺,王淑荷,郭建亭,龙期威.金属学报,2002;38:453) [3] Lynn K G, MacDonald J R, Boie R A, Feldman L C,Gabbe J D, Robbins M F, Bonderup E, Golovchenko JPhys Rev Lett, 1977; 38: 241 [4] Deng W, Brusa R S, Karwarsz G P, Zec.ca A. Mater SciForum, 2001; 363: 195 [5] Deng W, Brusa R S, Karwarsz G P, Zecca A. Mater SciForum, 2001; 363: 198 [6] Saarinen K, Nissila J, Kauppinen H, Hakala M, Puska MJ, Hautojavi P, Corbel C. Phys Rev Lett, 1999; 82 1883 [7] Petkov M P, Weber M H, Lynn K G, Crandall R S, GhoshV J. Phys Rev Lett, 1999; 82. 3819 [8] Ghosh V J, Alatalo M, Asoka-Kumar P, Nielsen B, LynnK G. Phys Rev, 2000; 61B: 10092 [9] Mylar U, Simpson P J. Phys Rev B, 1997; 56: 14303 [10] Asoka-Kumar P, Alatalo M, Ghosh V J. Kruseman A C,Noelsen B, Lynn K G. Phys Rev Lett, 1996; 82: 2097
JIA Wei;XIONG Lianggue;ZENG Meiguang;WANG Jiangiang (Department of Materials Science; College of Science; Northeastern University; Shenyang 110006)(International Center for Materials Physics; Institute of Matal Research; The Chinese Academy of Sciences;Shenyang 110015). POSITRON ANNIHILATION STUDY ON THE EFFECT OF MISCH METAL IN Al-Fe-V-Si-Mm ALLOYS[J]. 金属学报, 1998, 34(2): 221-224.
[11]
ZHAO Faru; WANG Baoyi (Lanzhou University; Lanzhou 730000); TONG Zhichen (Shanghai Mechanical Engineering Collnge; Shanghai 200040); WANG Tianmin (Lanzhou University; Lanzhou 730000;Lanzhou Institute of Chemistry-Physics;Chinese Academy of Sciences; Lanzhou 730000)(Manuscript received 1996-05-10; in revised form 1996-1 1-27). HYDROGEN INDUCED-IN DEFECT AND RECOVERY BEHAVIOUR IN POLYCRYSTALLINE NICKEL[J]. 金属学报, 1997, 33(4): 345-351.
[12]
XIONG Liangyue1;2); CHEN Jian1); HU Zhuangqi1)(Institute of Metal Research; Chinese Acdemy of Sciences; Shenyang 110015)(International Center for Materials Physics; Chinese Academy of Sciences;Shenyang 110015). POSITRON LIFETIME SPECTRA OF DUCTILE NiAl-Fe INTERMETALLIC ALLOYS[J]. 金属学报, 1996, 32(11): 1189-1193.
[13]
GU Yuefong; DENG Wen; GUO Jianting; (Institute of Meial Research; Chinese A cademy of Sciences; Shenyang 110015)XIONG Liangyue; LIN Dongliang (Institute of Metal Research; Chinese A cademy Sciences. Shenyang 110015)(Shanghai Jiaoiong University; Shanghai 200030). PAT STUDY OF EFFECT OF Zr ON DEFECTS IN Ni_3Al ALLOY[J]. 金属学报, 1995, 31(17): 238-240.
[14]
LIU Tao; PU Yuxie; ZHAO Zhongtao; MA Ruzhang(University of Sciene and technology Beijing; 100083). GUO Yinghuan(Institute of High Energy Physics;Chinese Academiy of Sciences;Beijing 1000800)(Manuscript received 1994-07-11;in revised form 1994-12-01). STRUCTURAL DEFECT AND INTERNAL STRESS ARRANGEMENT IN NANOCRYSTALLINE Fe73.5Cu1Nb3Si13.5B9[J]. 金属学报, 1995, 31(16): 159-163.