It's obtained that main mechanism of superplastics is grain boundary sliding.
据此得出超塑性变形的主要机制是晶界滑动、孔洞和位错运动松弛晶界引起应力集中，协调了晶界滑动的连续进行。
Microstructural observations suggest that grain boundary sliding (GBS) makes a substantial contribution to the superplastic deformation, and the.
显微组织观察和断口分析表明 ,工业态AZ31镁合金超塑变形主要由晶界滑动机制所控制 ,同时 ,动态再结晶也是合金超塑变形的一种协同机制。
Its main mechanism of superplasticity deformation is grain boundary sliding,and the main r.
Ti3Al金属间化合物超塑变形的主要机制是晶界滑动,失效的主要原因是空洞的形成和连接。
Contrary to be crack sources and make mechanical properties of alloys deteriorate as it has been always considered, η phase was found to have little effect on room temperature properties and furthermore, it improved the high temperature ductility of the alloy via blocking the grain boundary slip due to it.
通过对一种Fe-Ni-Cr合金进行过时效后晶界上析出η相的研究发现,由于晶界η相与合金基体保持共格关系,η相对合金的室温性能影响不大;并且在高温变形条件下η相形成凸起,阻碍晶界滑动,减小在晶角处的应力集中,从而提高合金的高温塑性。
As the grain sizes are decreased,the transition of deformation mechanism from partial dislocation emission from grain boundaries and twinning to grain boundary sliding and grain rotation in face-centered-cubic nano-crystalline metals is summarized.
综述了纳米面心立方金属的变形机制随晶粒尺寸的减小而发生的变化,即变形机制由晶界处发射不全位错、形成孪晶转变为晶界滑移、晶粒转动。
The following grain size effects are analyzed; on the contributions of various mechanisms including diffusion creep,grain boundary sliding and dislocation creep to the total strain, and on the grain boundary sliding which is a dominant mechanism in superplastic deformation.
分析了晶粒尺寸在各种机制中对总变形的影响;晶粒尺寸不同时材料变形的微观特征;晶粒尺寸对晶界滑移速率的影响。
For the latter,there are two different types,attributed to liquid phase at grain boundary and grain boundary sliding respectively.
后者依材料流动形式不同又分为由液相引起和由晶界滑移引起的超塑性。