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to the thin plate. As contrast with Al2 Ti precipitates, L1o-AlTi(Cr) precipitatesform thin plate and lie on {100} planes of L12-Al3Ti(Cr) matrix at the initial agingtime and for long time aging the habit plane of the thin plate deviated from {100}plane and finally formed a kinked plate. The coherency stresses across the precipi-tate/matrix interface are considered to be the main factor controlling......
of twins with a common axis <110> α’ parallel to the normal of {111} γ habit plane to minimize transformation strain.When α’-M could be formed only by deformation,it nucleated......
TiO2和O-Al2O3晶体的生长习性 殷之文1,陈之战1,李汶军1,郑燕青1,施尔畏1 (1.中国科学院上海硅酸盐研究所,上海 200050) 摘要:通过水热法制备粉体的实验观察到金红石,锐钛矿和α-Al2O3晶体的生长习性.采用配位多面体生长习性法则合理地解释了Ti O2和α-Al2O3的生长习性.其主要结果为α-Al2O3晶体的生长习性为平板{0001},其各晶面的生长速度为:V{0001 }<V{1123};锐钛矿的生长习性为四面体,其各晶面的生长速度为V=V>V>V.而PBC理论很难合理地解释α-Al2 O3晶体的生长习性. 关键词:Ti O2; α-Al2 O3; 生长习性; 水热法; Ti O2; α-Al2 O3; growth habit; hydrothermal method; [全文内容正在添加中] ......
of peak-aged 2197 alloy is coherent with the matrix while the rest is non-coherent during under-aged and peak-aged states. Habit relationships between T1 phase which is hexagonal crystal system and the matrix is as follow: (0001)T1//(111)A1 and [1010]T1//[110] A1, and the habit plane is {111}A1. Key words: 2197 Al-Li alloy; thermo-mechanical treatment; T1 phase; precipitation behavior 铝锂合金具有低密度,高比......
文献标志码:A 文章编号:1672-7207(2011)01-0147-05 Three dimensional analysis for effect of structural plane... software FLAC3D, the cohesion and friction angle of structural plane were varied, safety factor and slip plane were analyzed. The results show that, for slope with different inclinations of structural......
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University, Columbus, OH 43210, USA) Abstract: To investigate the morphology and habit plane orientation of α precipitates, the α precipitation process in b→α transformation were simulated by phase... in determining the morphology and habiting plane orientation of α precipitates. The growth of α precipitates is a diffusion-controlled process. The solute concentrations are found inhomogeneous near α......
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were pointed out. Currently, the effects of the morphology, distribution and habit plane of the precipitates in magnisium alloys on different slip systems and twinning behavior have not been...(ε≈30%)后,纯Mg,Mg-1%Y和Mg-3%的(0002)和完整极图[17] Fig.2 Plane strain compression textures (ε≈30%) as shown by complete recalculated (0002) and pole figures for pure Mg, Mg-1%Y and Mg-3%Li[17] 少量析出物......