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i1215018739

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    ±¾ÈËÔÚһƪ½éÉÜL12ºÍDO22ÓÐÐòת±äµÄÎÄÕÂÖп´µ½Ëµ£ºFCC»ùÌåÏòÁ¢·½L12ת±ä´æÔÚËÄÖÖtranslational variants (antiphase domains, or APD's)£¬ÔÚÕâЩ³ë½çÖдæÔÚÈýÖÖ½çÃæ (antiphase boundaries, or APB's)£¬´íÅäʸÁ¿ 1/2<110>£»FCC»ùÌåÏòÕý·½DO22ת±äÓÐËÄÖÖtranslational variants£¬ÈýÖÖantiphase boundaries£¬´íÅäʸÁ¿Ò²ÊÇ1/2<110>£¬Ó¢ÎÄÔ­ÎÄÈçÏ£º
    For the cubic to cubic, fee ¡ª Ll2 transition, four translational variants (antiphase domains, or APD's) of the Ll2 are possible. Three types of interfaces can occur between these domains (antiphase boundaries, or APB's) having 1/2(110)-type displacement vectors. For the cubic to tetragonal, fee ¡ª DO22 transition, within each rotational domain of the tetragonal DO22 four translational APD's (with three types of APB's) are possible. Displacement vectors of the APD's are the same as for the Ll2 APD's (in fee coordinates). In the tetragonal coordinates of the DO22 the vectors are l/2[110], 1/2[10 j]t, and l/2[01 {],. While each of the Ll2 APB's can be identified by dark-field imaging with different superlattice reflections, the 1/2(10j^-type interfaces of the DO22 cannot be distinguished from each other (the reflection conditions for the IA/mmm spacegroup of the DO22 forbid hkl with h + k + I = odd).
    ÎÄÖÐÌáµ½µÄAPD¡¢ADB¡¢displacement vectorÊÇÊôÓÚʲô¸ÅÄÇë¸÷λָ½Ì£¡
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Andrewcheng

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2Â¥: Originally posted by Andrewcheng at 2015-12-06 23:22:36
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i1215018739

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2Â¥: Originally posted by Andrewcheng at 2015-12-06 23:22:36
ÄãºÃ£¬ÎÒÒ²ÔÚѧϰÕâ·½ÃæµÄ֪ʶ£¬¿ÉÒÔ°ÑÕâÆªÎÄÕµĵç×Óµµ´«Ò»·Ý£¬»òÕßÎÄÕÂÁ´½Ó·¢Ò»ÏÂÂð£¿Ð»Ð»£¡

Evolution of the two-phase microstructure L12 + DO22
in near-eutectoid Ni3(Al, V) alloy, L. A. Bendersky, F. S. Biancaniello, and M. E. Williams£¬²»ÓÃ¿ÍÆø~
4Â¥2015-12-07 12:08:32
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Andrewcheng

Í­³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
4Â¥: Originally posted by i1215018739 at 2015-12-07 12:08:32
Evolution of the two-phase microstructure L12 + DO22
in near-eutectoid Ni3(Al, V) alloy, L. A. Bendersky, F. S. Biancaniello, and M. E. Williams£¬²»ÓÃ¿ÍÆø~...

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i1215018739

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5Â¥: Originally posted by Andrewcheng at 2015-12-07 13:53:25
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