欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
采用相场方法研究了不同颗粒体积分数及尺寸条件下不同形状的硬质颗粒对两相系统晶粒长大的影响,结果表明：球形颗粒大多处于三角晶界处,片状颗粒处于晶界处且沿晶界分布.不同形状的硬质颗粒对体积占优的α相晶粒长大无明显影响,对体积分数较小的β相晶粒长大的影响主要取决于颗粒数目.颗粒数目较少时,不同形状的硬质颗粒对β相晶粒长大无明显影响;颗粒数目较多时,片状颗粒比球形颗粒对β相晶粒长大的阻碍作用强烈.颗粒体积分数越大,颗粒对晶界的钉扎作用越强,稳态时晶粒的半径越小;颗粒尺寸越大,单个颗粒对晶界的钉扎作用越强,但总的钉扎作用越弱,稳态时晶粒的半径越大.
英文摘要：
The effects of hard particles with different shapes,volume fractions and sizes on two- phase grain growth have been systematically investigated by phase-field method.The results showed that most of the spherical hard particles located at the intersection of tricrystal boundary,while flaky hard particles distributed along the grain boundary.Particles of different shapes have not obvious effect on the a phase grain growth,and the effect of hard particles with different shapes on the（3 phase grain growth depends on the number of particles.The flaky particles have stronger pinning effect on the /？ phase grain growth than the spherical particles when hard particles reach enough number.The pinning effect of the hard particles is enhanced when the volume fraction increased or the size of hard particles reduced.The greater the volume fraction or the smaller the size of hard particles is,the smaller the grains＇size is.
同期刊论文项目
同项目期刊论文
Phase-field study on the pre-precipitated phase of ordered intermetallic compounds in binary and ter
First principles study ofthe electronic properties of a Ni3(2,3,6,7,10,11-hexaaminotriphenylene)2 mo
Structural and electronic properties of coaxial nanocables of AlN nanowire core and SiC nanotube she
Phase-field study of the second phase particle effect on texture evolution of polycrystalline materi
Phase-field study the effects of elastic strain energy on the occupation probability of Cr atom in N
The effects of dangling bond on the electronic and magnetic properties of armchair AlN/SiC heterostr
Microscopic phase-field study of the effect of temperature on the pre-precipitates of Ni–Al–Cr alloy
Phase-field crystal study for the characteristics and influence factors of grain boundary segregatio
On ferroelectric domain polarization switching mechanism subject to an external electric field by si
Microscopic phase-field study on directional coarsening mechanism caused by interaction between prec
Microscopic phase-field study on order-disorder transition of the antiphase domain boundary formed b
Phase field simulation of interatomic potentials for double phase competition during early stage pre
Faceting transitions in crystal growth and heteroepitaxial growth in the anisotropic phase-field cry
Structural and electronic properties of conducting Cu nanowire encapsulated in semiconducting zigzag
期刊信息
位置：