Effect of yttrium addition on lattice parameter, Young's modulus and vacancy of magnesium
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Effect of yttrium addition on lattice parameter, Young's modulus and vacancy of magnesium. / Peng, Qiuming; Meng, Jian; Li, Yangde et al.
In: Materials Science and Engineering A, Vol. 528, No. 4-5, 25.02.2011, p. 2106-2109.Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Effect of yttrium addition on lattice parameter, Young's modulus and vacancy of magnesium
AU - Peng, Qiuming
AU - Meng, Jian
AU - Li, Yangde
AU - Huang, Yuangding
AU - Hort, Norbert
PY - 2011/2/25
Y1 - 2011/2/25
N2 - The effect of yttrium addition on fundamental characters of magnesium has been investigated by calculated and experimental methods. It was found that the lattice parameter increased and the axial ratio c/. a decreased with the increment of yttrium in solid solution. The approximately linear relationship between Young's modulus and the content of yttrium in solid solution was observed in the single phase solid solution Mg-Y alloys (T4 state). However, Young's modulus was closely relevant to the fraction of second precipitate except the content of saturated yttrium in matrix for the aged Mg-Y alloys (T6 state). The concentration of vacancy increased with the increased content of yttrium in solid solution, which was mainly caused by the atomic size misfit and the difference of valence electrons between yttrium and magnesium.
AB - The effect of yttrium addition on fundamental characters of magnesium has been investigated by calculated and experimental methods. It was found that the lattice parameter increased and the axial ratio c/. a decreased with the increment of yttrium in solid solution. The approximately linear relationship between Young's modulus and the content of yttrium in solid solution was observed in the single phase solid solution Mg-Y alloys (T4 state). However, Young's modulus was closely relevant to the fraction of second precipitate except the content of saturated yttrium in matrix for the aged Mg-Y alloys (T6 state). The concentration of vacancy increased with the increased content of yttrium in solid solution, which was mainly caused by the atomic size misfit and the difference of valence electrons between yttrium and magnesium.
KW - Ab initio calculation
KW - Age hardening
KW - Elastic properties
KW - Solid solution
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=78650515161&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2010.11.042
DO - 10.1016/j.msea.2010.11.042
M3 - Journal articles
AN - SCOPUS:78650515161
VL - 528
SP - 2106
EP - 2109
JO - Materials Science and Engineering A
JF - Materials Science and Engineering A
SN - 0921-5093
IS - 4-5
ER -