The relationship between damage cavity density and percent composition of ∑3 sub-grain boundary structure in material was determined and the predicted result were validated.
利用该方法建立损伤空洞密度与∑3亚晶界结构百分数关系曲线,并对预测的结果进行验证。
After one ECAP deformation pass,profuse subgrains with the size of 650900nm are formed,few dislocations can be found inside the subgrains,but high density dislocation networks still are observed in some grains,the hardness of material increases 87%.
组织和性能检测表明:在连续ECAP变形一道次后,在晶粒内部形成了直径为650~900 nm且内部基本无位错的亚晶,但部分大晶粒内部仍存在高密度的位错网,材料硬度提高了87%;经过4道次连续ECAP变形后,亚晶并未进一步细化,但亚晶界趋于平直、清晰,且亚晶内部基本未见位错组织,材料硬度提高也不显著;与传统ECAP相比,连续ECAP工艺由于具有较高的变形区温度,促进了晶内位错的反应即动态回复过程,较早形成了平直清晰的亚晶结构,同时伴随每道次变形过程的动态回复也降低了最后晶格中累积的能量,使变形两道次后的组织和性能变化不显著。
The results show that the subgrain structures of the ferrite-strip along the drawing direction are formed in the deformation bands of steel.
结果表明:在变形带中,铁素体沿平行于剪切应力方向形成条带状亚晶, {110}晶面为变形条带状亚晶的滑移面,条带状亚晶内存在高密度位错;经退火处理后,条带状亚晶内的位错束集成与条带状亚晶界垂直的位错胞壁,形成类方形位错胞结构;进一步经位错胞壁的扩散迁移,形成各胞壁之间呈120°夹角的亚晶结构。
Semi-empirical relations between subgrain sizes and deformation variables were construct.
利用 ＴＥＭ分析了合金在不同压缩条件下的组织形貌特征，采用ＥＢＳＰ分析了晶粒间的取向差，研究了其动态再结晶行为通过回归分析建立了７００５合金热变形条件与变形亚晶尺寸间关系的半经验模型。
At higher drawing strains,a single fiber was divided into sub-grains.
在较低的应变量下纤维保持着与铸态树枝晶相同的bcc单晶结构,在较高的应变量下,单根Cr纤维被分隔为一些由亚晶界组成的亚结构,相邻亚晶的偏差角在5~30°之间。
Dynamic process simulation of solute grain boundary segregation;
溶质原子晶界偏聚动力学过程的数值模拟
Methodological probe into grain boundary etching of molybdenum disilicide based materials;
二硅化钼基材料的晶界腐蚀方法探讨
Studies on Intergranular Phase in Si_3N_4-MgO-CeO_2 Ceramics;
Si_3N_4-MgO-CeO_2陶瓷晶界相研究
GRAIN BOUNDARY MIGRATION IN RECRYSTALLIZED ARMCO IRON DURING GRAIN GROWTH
α-铁素体晶粒长大过程中的晶界迁移
The Schottky Barrier at Grain Boundaries of Polycrystalline Ferroelectric Semiconductors
多晶铁电半导体晶界处的肖特基势垒
Grain Boundary Internal Friction Peak in Polycrystalline Pure Aluminum Studied by Continuous Temperature Changing Method
连续变温法测定多晶纯铝晶界内耗峰
Analysis of the characteristics of grains and grain boundaries in the non-oriented steel by EBSD
无取向硅钢晶粒与晶界特征的EBSD分析
EBSD analyses on grain orientation and grain boundary structure of grain-oriented silicon steel
EBSD研究取向硅钢晶粒取向和晶界结构
Synthesis of Chiral Liquid Crystal AEMBB with Twist Grain Phases
含有扭曲晶界相手性液晶AEMBB的合成
Relationship between Grain Boundary Characters and Grain Boundary Strength of Austenitic Stainless Steel A304
奥氏体不锈钢A304晶界特征与晶界强度的关系
grain-boundary flow
颗粒边界流动, 粒间流动, 晶界流动
A Discussion of the Ways to Estimate the Resistances of the Grain and the Grain Boundary about the Low-voltage Varistor Ceramics;
低压压敏陶瓷晶界、晶粒电阻的估算方法探讨
EVOLUTION OF∑3 BOUNDARIES DURING RECRYSTALLIZATION OF COLD-ROLLED NICKEL DEFORMED TO HIGH STRAIN
大应变量冷轧金属Ni再结晶过程中∑3晶界演化
Tensile Properties of Twist Low Angle Boundary of DD6 Single Crystal Superalloy
DD6单晶高温合金扭转小角度晶界的拉伸性能
CHARACTERISTIC AND FORMATION MECHANISM OF PRECIPITATES AT RECRYSTALLIZATION GRAIN BOUNDARIES OF SINGLE CRYSTAL SUPERALLOY DD6
单晶高温合金DD6再结晶晶界析出相特征及其形成机制
Study on Intergranular Dilution of Phosphorus at High Temperature and Low Compressive Stress and Intergranular Brittleness in Steel 2.25Cr1Mo;
高温低压应力下2.25Cr1Mo钢中P的晶界贫化及晶界脆性研究
The grain boundary energy was measured with thermal etching method.
用热蚀刻方法测量了合金的晶界能。
a world-famous Brand, a fine product at home
世界名牌，国内佳晶
Recrystallization on Interface between NiCoCrAlYTa Coating and Nickel-Based Super-Alloy
NiCoCrAlYTa涂层/镍基单晶高温合金界面再结晶
Studies on Grain-boundary States in Polysilicon Films FET;
多晶硅薄膜场效应结构的晶粒间界能态分布