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Solute atom segregation to I1 stacking fault and its bounding partial dislocations in a Mg–Bi alloy

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摘要 Stacking faults(SFs)and the interaction between solute atoms and SFs in a Mg–Bi alloy are investigated using aberration-corrected scanning transmission electron microscopy.It is found that abundant I_(1)SFs are generated after cold rolling and are mainly distributed inside{1012}twins.After aging treatment,the formation of single-layer and three-layer Bi atom segregation in the vicinity of I_(1)fault are clearly observed.Bi segregation also occurs at the 1/6<2203>bounding Frank partial dislocation cores.The segregation behaviors in I_(1)fault and Frank dislocations are discussed and rationalized using first-principles calculations.
出处 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2024年第8期3135-3141,共7页 镁合金学报(英文)
基金 support by the National Natural Science Foundation of China(52071033) Open Foundation of State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body(32115016).
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