Non-uniform Stress Field and Stress Concentration Induced by Grain Boundary and Triple Junction of T

来源 :Journal of Materials Science & Technology | 被引量 : 0次 | 上传用户:SnailHou
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The stress characteristics in the anisotropic bicrystal and tricrystal specimens were analyzed using the anisotropic elastic model, orthotropic Hill’s model and rate-dependent crystallographic model. The finite element analysis results show that non-uniform stresses are induced by the grain boundary. For bicrystal specimens in different crystallographic orientations, there exist stress concentrations and high stress gradients nearby the boundaries. The activation and slipping of the slip systems are dependent on the crystallographic orientations of the grains and also on the relative crystallographic orientations of the two adjoining grains. For the tricrystal specimens, there is not always any stress concentrations in the triple junction, and the concentration degree depends on the relative crystallographic orientations of the three grains. Different from the bicrystal specimens, there may be or no stress concentration in the vicinity of grain boundaries for the tricrystal specimens, which depends on t The stress characteristics in the anisotropic bicrystal and tricrystal specimens were analyzed using the anisotropic elastic model, orthotropic Hill’s model and rate-dependent crystallographic model. The finite element analysis results show that non-uniform stresses are induced by the grain boundary. For bicrystal specimens in The crystallographic orientations of the grains and also on the relative crystallographic orientations of the two adjoining grains. For the trystrystal orientations, there exist stress concentrations and high stress gradients nearby the boundaries. , there is not always any stress concentrations in the triple junction, and the concentration degree depends on the relative crystallographic orientations of the three grains. Different from the bicrystal specimens, there may be no stress concentration in the vicinity of grain boundaries for the tricrystal specimens, which depends on t
其他文献
针对生产中对塑件翘曲变形的要求,提出以描述指定特征翘曲程度的特征翘曲度来评价塑件的翘曲变形。通过优化特征翘曲度,将数值模拟和优化技术相结合,提出一种注塑模具浇口位
正如标准舞给人的感觉永远是高贵优雅一样,燕尾服给人的感觉永远是绅士风度。年轻的男舞者梳起蓬松的短发,穿上挺刮的燕尾服,牵起美丽舞伴的手,在绚丽的舞池中翩翩起舞,是一
本文对50例干燥综合征(SS)患者的鼻粘膜与下唇活检材料进行了组织学对比分析,结果表明鼻粘膜活检对SS的诊断敏感性与下唇活检相似,但简单易行,可重复做,便于进行免疫病理学
请下载后查看,本文暂不支持在线获取查看简介。甘于付出的人——记繁峙县文体局局长 韩英正请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this ar
我院于1984年遇到麻风一例,因鼻塞、鼻出血而先就诊于耳鼻咽喉科,实属罕见,特报告如下,供同道们参考。病例:男,43岁,清远籍,农民,已婚,住院号427635。右鼻涕常带血丝已8月余
邓小平的五个孩子中,邓朴方、邓质方是男孩,其余三个则是女孩。3个女孩中,邓林是画家,邓楠是高级公务员,邓榕是作家和社会活动家。在邓小平的几个女儿中,露面最少、也最不为
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
鸡西矿业集团公司张辰煤矿西三采区3
钻井作业必然伴随着钻井液在井内的流动及钻井液与井眼周围地层的热交换。钻井液在井内的流动及井内温度分布是影响井下压力平衡、井壁稳定等方面的重要因素 ,深入研究钻井过
太 平洋彼 岸的 拉美 ,长期 以 来很 少 引 起 我 们 的 关 注 。 但 在 2004年 上 半 年 , 有 很 多 中 国 人 在 谈 论“拉美化 ”。 令人 遗憾的 是,这一 似是 而非 的伪