1) grain boundary sliding
晶界滑移
1.
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。
2.
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。
3.
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。
2) grain boundary sliding
晶界滑动
1.
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。
2.
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。
3.
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。
3) grain boundary slip
晶界滑动
1.
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。
4) crystal slip
晶体滑移
1.
Under the framework of crystal slip theory,a θ model that can describe the anisotropic creep of Ni-base single crystal(SC) alloy was built by the θ mapping method to the crystal directional problem of Ni-base single crystal turbine bladecreep.
针对镍基单晶涡轮叶片蠕变的晶体方向性问题,运用θ映射法,在晶体滑移理论框架下,建立了能够描述镍基单晶合金各向异性蠕变的θ模型。
5) crystalline slip
晶面滑移
1.
It can be predicated that local crystalline slip systems are responsible for the formation of the kink band.
在变形初期，因局部晶面滑移而形成与纤维轴约呈６０～６５°角的变形带。
6) intercrystalline slip
晶间滑移
补充资料：晶界滑移
晶界滑移
slip at grain boundaries
晶界滑移slip atgrain botindaries相邻两晶粒在外加应力作用下沿着晶界产生的滑动。图1是晶界滑移的示意。1913年W.罗森汉和J.C.W.汉弗莱就 图1在外加切应力作用下的晶界滑移在钢的高温形变过程中观察到晶界滑移。1947年葛庭健在高纯多晶金属铝中发现一个内耗峰(在单晶中没有)，并提出其来源是由于晶粒沿晶界作粘滞性滑移所引起的应力弛豫。这一内耗峰称为葛峰。晶界滑移葛峰的发现是支持薄晶界层理论的最早的实验证明，也推动了晶界滑移的研究。近期的研究表明，葛峰与多晶金属的晶粒度有关。 晶界滑移可以用划痕方法进行直接测量。B.查默斯首先发现晶界滑移与晶界的类型和取向差有关。随后的实验进一步证实晶界滑移与晶界结构有关。图2给出金属锌以〔101印为转轴的倾侧晶界的晶界滑移量与倾侧角及温度的关系。由图2可见晶界滑移与倾侧角有关。小角晶界和某些重合晶格晶界(例如艺9(56.6。))对晶界滑移阻力很大。由图还可看出，晶界滑移与温度有关，温度越高，晶界滑移量越大。因此，晶界滑移对材料的高温力学性能丫如蠕变等)产生很大影响:了l心)1弓))倾侧艺9 f 56。615花奋p=1 96kPa亡二3屺l，1分{663K623K卦︸S翻俘犯汉)573K0占20 40印 倾侧角6(度)8《)图2锌晶界滑移与倾侧角和温度的关系 (吴希俊)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条