Structure design of high-performance Cu-based shape memory alloys

来源 :Rare Metals | 被引量 : 0次 | 上传用户:mcdonaldz
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 effects of various structure factors on the properties(superelasticity mainly) of Cu-based shape memory alloys(SMAs) were systematically evaluated in this review article through literatures combining with our work. It is concluded that besides the decisive role of grain orientation, the grain boundary(GB) characteristics also play important roles in the superelasticity, which include GB area, GB type, GB morphology and GB direction in descending order of the effect significance. According to the above results, the prior principles of structure design are proposed for high-performance Cu-based SMAs from most to least important:(1) obtaining grain orientation with high phase transformation strain;(2) increasing grain size or reducing GB area;(3) obtaining straight low-energy GBs, especially low-angle GBs;(4) trying to make GB direction parallel to external stress. Consistent with the main or all principles, the bamboo-like-grained and columnar-grained(CG) Cu-based SMAs show excellent comprehensive properties. The effects of various structure factors on the properties (superelasticity mainly) of Cu-based shape memory alloys (SMAs) were systematically evaluated in this review article through literatures combining with our work. It is concluded that besides the decisive role of grain orientation, the grain boundary (GB) characteristics also play important roles in the superelasticity, which include GB area, GB type, GB morphology and GB direction in descending order of the effect significance. According to the above results, the prior principles of structure design are proposed for high-performance Cu-based SMAs from most to least important: (1) obtaining grain orientation with high phase transformation strain; (2) increasing grain size or reducing GB area; (3) obtaining straight low- GBs; (4) trying to make GB direction parallel to external stress. Consistent with the main or all principles, the bamboo-like-grained and columnar-grained (CG) Cu-based SMAs show excellent comprehensive properties.
其他文献
建立科学的计算机信息处理系统,能够显著提升办公效率,满足当前职场环境中的业务需要.企业开展办公自动化技术的深入研究,应该从邮件系统升级、网络信息平台优化和即时通讯系
如今,我国的信息技术在不断的发展,其技术创新能力和经济发展状况有着非常紧密的联系.为了促进经济的发展,必须大力的发展电子信息技术.但是现在的电子信息技术还存在很多的
班主任是管理班级的最主要的负责人,在建设良好的班风、学风上发挥着重要作用.然而,要想管理好一个班级,仅仅靠教师是远远不够的,还需要建设一支高素质、高效率的班干部团队.
科技英语文章不同于普通英语,有其鲜明的特色。本文以图示理论的视角分析了阅读理解的过程,从内容图示、语言图示和形式图示三个方面,探讨在科技英语阅读教学中如何突出科技
高职教育作为我国高等教育的有机组成部分在为社会输送专业技术人才方面扮演者不可忽视的角色.如今随着素质教育的不断发展,高职教育正在处于改革与创新、凸显职业教育类型的
随着信息化在工作方式、企业管理等方面带来种种显性变化,对企业转型发展,发挥着举足轻重的作用,华聚能源公司结合矿区煤泥煤矸石电厂小型机组群和电网实际情况,集团式企业多
医院电子病历以“无纸化一体化智能化”为目标,电子病历系统的建设是医疗系统信息化建设最核心的内容之一.笔者以泉州市第一医院电子病历系统建设为素材,重点阐述电子病历的
军工企业都力求建立较为完善的安全防护体系,而不是单独罗列一些安全产品,本文从企业的实际环境出发,打破安全产品之间的壁垒,基于“信息化思想”提出了我们在构建安全防护体
近年来,随着我国社会经济体制的不断改革与发展,社会发展对人才需求的不断变化,给我国人力资源社会保障公共服务提出了更高的要求.人力资源社会保障作为我国公共服务体系的重
我院护理部自1998年初,在强化服务意识,提高服务质量上做文章,想办法,在本市卫生系统首家推行礼仪服务,从而使医院在严峻的医疗市场竞争中赢得了主动权,取得了明显的经济效