Phase transformations in Ti–34Al–13Nb alloy
Phase transformations in Ti–34Al–13Nb alloy
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DOI：
10.1007/s10853-016-0267-z
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发表时间：
2016-08
影响因子：
4.5
通讯作者：
T. Ye;Lin Song;Maohua Quan;L. You;Yongfeng Liang;Junpin Lin
中科院分区：
文献类型：
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作者：
T. Ye;Lin Song;Maohua Quan;L. You;Yongfeng Liang;Junpin Lin
The microstructure and orientation relationship (OR) of the α2and ωophases in the Ti–34Al–13Nb (at. %) alloy were investigated. The α2segments nucleated at the ωoboundaries after aging at 900 °C for 2 h. The ORs between the two phases were studied by selected area diffraction patterns using a transmission electron microscope and interpreted by the superimposed stereographic projections. Two ORs were defined as follows: $$ \left[ {1\bar{2}10} \right]\upalpha_{2} //\left[ {000\bar{1}} \right]\upomega_{o} $$; $$ (0002)\upalpha_{2} //\left[ {\bar{1}2\bar{1}0} \right]\upomega_{o} $$ and $$ \left[ {\bar{1}010} \right]\upalpha_{2} //\left[ {2\bar{4}2\bar{3}} \right]\upomega_{o} $$; $$ \left( {0002} \right)\upalpha_{2} //\left( {01\overline{12} } \right)\upomega_{o} $$. Two α2laths with paralleldirections were observed in this alloy, which were explained by the different α2variants nucleated at the ωoboundaries according to ORI and ORII.
The microstructure and orientation relationship (OR) of the α2and ωophases in the Ti–34Al–13Nb (at. %) alloy were investigated. The α2segments nucleated at the ωoboundaries after aging at 900 °C for 2 h. The ORs between the two phases were studied by selected area diffraction patterns using a transmission electron microscope and interpreted by the superimposed stereographic projections. Two ORs were defined as follows: $$ \left[ {1\bar{2}10} \right]\upalpha_{2} //\left[ {000\bar{1}} \right]\upomega_{o} $$; $$ (0002)\upalpha_{2} //\left[ {\bar{1}2\bar{1}0} \right]\upomega_{o} $$ and $$ \left[ {\bar{1}010} \right]\upalpha_{2} //\left[ {2\bar{4}2\bar{3}} \right]\upomega_{o} $$; $$ \left( {0002} \right)\upalpha_{2} //\left( {01\overline{12} } \right)\upomega_{o} $$. Two α2laths with paralleldirections were observed in this alloy, which were explained by the different α2variants nucleated at the ωoboundaries according to ORI and ORII.