Gang Wang
,
Zbigniew H. Stachurski
金属学报(英文版)
doi:10.1007/s40195-016-0369-2
The homogeneous plastic flow in bulk metallic glasses (BMGs) must be elucidated by an appropriate atomistic mechanism. It is proposed that a so-called concordant shifting model, based on rearrangements of five-atom subclusters, can describe the plastic strain behaviour of BMGs in a temperature range...
关键词:
Bulk
,
metallic
,
glasses
,
Superplasticity
,
Vacancy/atom
,
exchange
,
model
,
Atomic
,
concordant
,
shifting
,
model
,
Strain
,
rate
Ying Yan
,
Wan-Peng Deng
,
Zhan-Feng Gao
,
Jing Zhu
,
Zhong-Jun Wang
,
Xiao-Wu Li
金属学报(英文版)
doi:10.1007/s40195-016-0373-6
To explore the coupled effect of temperature T and strain rate ε˙ε˙ on the deformation features of AZ31 Mg alloy, mechanical behaviors and microstructural evolutions as well as surface deformation and damage features were systematically examined under uniaxial tension at T spanning...
关键词:
AZ31
,
Mg
,
alloy
,
Uniaxial
,
tension
,
Temperature
,
Strain
,
rate
,
Deformation
,
Damage
,
Twinning
Ya-Qiang Wang
,
Zhao-Qi Hou
,
Jin-Yu Zhang
,
Xiao-Qing Liang
,
Gang Liu
,
Guo-Jun Zhang
,
Jun Sun
金属学报(英文版)
doi:10.1007/s40195-016-0372-7
Cu-Al/Al nanostructured metallic multilayers with Al layer thickness h Al varying from 5 to 100 nm were prepared, and their mechanical properties and deformation behaviors were studied by nanoindentation testing. The results showed that the hardness increased drastically with dec...
关键词:
Nanostructured
,
films
,
Cu-Al/Al
,
multilayers
,
Hardness
,
Strain
,
rate
,
sensitivity
,
Layer
,
thickness
,
dependence
Hongbo DONG
,
Yonglin KANG
材料科学技术（英文）
With a geometrical model of porous material, a 3D finite-element analysis on the rolling process of spring steel- 60Si2Mn in the semi-solid state is carried out using software MARC. In terms of flat and groove rolling conditions, stress field and strain field are studied. The simulation results show...
关键词:
Finite-element analysis
,
null
,
null
,
null
周伟江
,
廖英强
,
张世杰
,
尤丽虹
宇航材料工艺
doi:10.3969/j.issn.1007-2330.2014.03.026
针对T800HB/环氧复合材料壳体易在封头部位产生复杂的应力状态,导致壳体低压破坏的问题,通过采用金属接头结构优化与封头补强措施,使T800HB/环氧复合材料壳体的爆破压力由28.2 MPa提高到36.4 MPa,纤维强度发挥率由65.7％提升至85.6％.
关键词:
复合材料壳体
,
碳纤维
,
应变
,
纤维强度转化率
曹海建
,
俞科静
,
钱坤
宇航材料工艺
doi:10.3969/j.issn.1007-2330.2015.02.004
利用有限元软件Workbench,建立了三维中空夹芯复合材料结构模型,进行拉伸性能研究.利用该模型,探讨了材料在1 mm拉伸位移栽荷作用下纤维、树脂和复合材料的应力、应变分布.结果表明:三维中空夹芯复合材料在拉伸载荷作用下,“X”形芯材交叉处应力最大,最容易发生拉伸破坏;上下面板应力最小,最不容易发...
关键词:
三维中空夹芯复合材料
,
有限元软件Workbench
,
拉伸性能
,
应力
,
应变
,
破坏模式
鄢东洋
,
王爱民
,
潘桢
,
王晓博
,
梁晓光
宇航材料工艺
doi:10.12044/j.issn.1007-2330.2017.03.017
针对纵缝采用搅拌摩擦焊、环缝采用VP-TIG熔焊工艺的箱底进行液压试验,并在试验过程中监测各典型焊缝位置的应变响应,结果显示箱底上搅拌摩擦焊缝和熔焊焊缝交叉形成的“T”型接头区域在试验中最先进入屈服,说明该位置材料的屈服强度较低,是箱底承载的薄弱环节.
关键词:
推进剂贮箱箱底
,
FSW
,
VP-TIG
,
液压
,
应变
