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Interactions between dislocations and twins in deformed titanium aluminide crystals
Yang, Guang; Ma, Shang-Yi; Du, Kui; Xu, Dong-Sheng; Chen, Sen; Qi, Yang; Ye, Heng-Qiang
2019-03-01
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume35Issue:3Pages:402-408
AbstractUsing scanning, transmission electron microscopy and aberration-corrected scanning transmission electron microscopy, we have studied the interactions between dislocations and twins in impact deformed polysynthetic twinned TiAl crystal. The 1/3 < 1<(11)over bar>] and 1/6 < 211] step dislocations on coherent twin boundaries reveal the interactions of glissile 1/2 <101> dislocations with the coherent twin boundaries. An abnormal stacking fault was found adjacent to the coherent twin boundary. It has the same stacking sequence but different atom species in the [(1) over bar 10] direction with an additional displacement of 1/4[(1) over bar 10] in two neighboring {111} layers, and is likely induced by the slip of a 1/12[112] (i.e. 1/4[(1) over bar 10] + 1/6[2 (1) over bar1]) dislocation. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordTiAl Dynamic deformation Twins Dislocations Abnormal stacking fault
Indexed BySCI
Language英语
WOS IDWOS:000454506800023
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81348
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Yang, Guang,Ma, Shang-Yi,Du, Kui,et al. Interactions between dislocations and twins in deformed titanium aluminide crystals[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(3):402-408.
APA Yang, Guang.,Ma, Shang-Yi.,Du, Kui.,Xu, Dong-Sheng.,Chen, Sen.,...&Ye, Heng-Qiang.(2019).Interactions between dislocations and twins in deformed titanium aluminide crystals.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(3),402-408.
MLA Yang, Guang,et al."Interactions between dislocations and twins in deformed titanium aluminide crystals".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.3(2019):402-408.
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