共搜索到235条信息，每页显示10条信息，共24页。用时：0小时0分0秒626毫秒
that when Yb is added to 7A60 alloy, Yb-containing dispersoids can be produced retaining the deformation-recovery Al matrix without obvious sub-grain boundary in the alloy and inhibiting Al matrix......
microcracks agree with the experimental data, with the constituents being large-scale-size microcracks and the coarse dispersoids and precipitates being small-scale size microcracks. How to improve fracture......
by SCR were studied. The results show that primary Al3Sc and dislocation are formed in alloy wire by SCR deformation, and the finer secondary Al3Sc dispersoids precipitated from the supersaturated......
recrystallized. The main recrystallization model is subgrain coalescence and growth, and the non-recrystallization is due to the formed nano-sized Al3(Sc,Zr) dispersoids, which pin the grain boundaries, subgrain... to effectively inhibit the recrystallization. On the contrary, it displayed negative effect on the strength due to the formation of coarse W (Al8Cu4Sc) phases and the absence of the Al3(Sc,Zr) dispersoids [23......
, the microstructure evolutions change from the directional diffusion of Zn and Mg atoms to the precipitation of S phase, depending on the cooling rate. At medium temperatures, η phase nucleates on Al3Zr dispersoids... are retained in solid solution, except for Fe and Zr atoms. Most Fe and Zr atoms are consumed in Al7Cu2Fe phase and Al3Zr dispersoids, which will not vary in solution treatment and the following cooling......
processing route from homogenisation to final ageing has been studied for thick plate products, it is reported how microstructural features such as dispersoids, coarse constituent particles, fine-scale... out at Monash University from about 2005 to 2013, the paper describes how metallurgical features such as Al3Zr dispersoids, coarse constituent particles (e.g. Al2CuMg, MgZn2, Mg2Si and Al7Cu2Fe), fine......
the HA dispersoids to be highly segregated along domain or grain boundaries, but homogeneously distributed along alpha(hcp) platelet boundaries within these domains in the Ti64 matrix for both the solid......
ranges from 300 to 410 °C with the nose temperature of about 360 °C. From TEM analysis, heterogeneous precipitate β-Mg2Si is prior to nucleate on the (AlxFeySiz) dispersoids in the critical temperature... that the preferred intragranular nucleation sites of the heterogeneous precipitates are AlxFeySiz dispersoids in the studied alloy. Since the concentrations of Si and Fe for the studied alloy are lower compared......
on grain boundaries of Al3Zr dispersoids. When the forgings are treated at 510 ℃, the recrystallization fraction increases significantly to about 48%. The main phases in this alloy are Al7Cu2Fe and η... forming around second phase after 450 ℃, 30 min solution treatment 图10 合金经470 ℃,60 min固溶后原始晶粒内部弥散分布的Al3Zr粒子的TEM像 Fig.10 TEM image of Al3Zr dispersoids in interior of original grains......
......
