共搜索到374条信息,每页显示10条信息,共38页。用时:0小时0分0秒303毫秒
during the soaking process. Both the experimental results and thermodynamic analysis conclude that there are three routes for inclusion evolution during the soaking process. In particular, Ostwald ripening plays an important role in the inclusion evolution, i.e., MnO–Al2O3–SiO2-based inclusions grow by absorbing the newly precipitated smaller-size MnO–Cr2O3 inclusions.关键词:......
, increasing the numbers of CEC passes could produce finer semi-solid mi- crostructure. The coarsening behavior of solid grains in the semi-solid state obeys Ostwald ripening and grain coalescence mechanisms......
can improve the growth of the solid grains. Two main coarsening mechanisms, viz. coalescence and Ostwald ripening, contribute to the growth of the solid grains simultaneously and independently......
and volume diffusion with a similar growth exponent(n≈0.4). However, external stress can affect the Ostwald ripening process of grain growth, causing a change of grain size and grain boundary density......
and low extrusion ratio lead to high volume fraction of recrystallized area, thus entirely equiaxed solid grains in semi-solid 7075 Al alloy samples can be obtained finally. In addition, Ostwald ripening......
was caused by the occurrence of Ostwald ripening of precipitated carbides. The optimum wear resistance was achieved for the alloyed ADI after DCT for 6 h. The wear mechanism of the alloyed ADI......
time resulted in grain coarsening and the improvement in degree of spheroidization.The coarsening behaviour of solid grains in the semi-solid state obeyed Ostwald ripening mechanism.The coarsening rate......
NPs from two aspects including thermodynamic and kinetic strategies.The former mainly involve preparing uniform NPs(with an identical size and homogeneous distribution) in order to restrain Ostwald ripening to achieve stability,while the latter primarily involves fixing metal NPs in some special confinement materials(e.g.,zeolites,mesoporous silica and mesoporous carbons),encapsulating NPs using......
......
phases, there are two types of coarsening modes: the migration of antiphase domain boundaries and the interphase Ostwald ripening. Key words: Ni75CrxAl25-x alloy; coarsening behavior; microscopic...) the interphase Ostwald ripening. The former case occurs among different L12 order domains or DO22 order domains separated by the APBs. The diffusion distance when one APB is migrated is about......