Computer Simulation of Ordering and Atom Clustering in Aging Binary Al-Li Alloy

来源 :材料热处理学报 | 被引量 : 0次 | 上传用户:k1165445191
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
Ordering and atom clustering in aging binary Al-Li alloy has been investigated by computer simulation through calculating the long range order (lro.) parameter and composition deviation order parameter from single-site occupation probabilities of Li atom. The results show that when the alloy lies in metastable region in the phase diagram ordering and atom clustering occur simultaneously. As the composition of the alloy increases ordering occurs earlier than atom clustering gradually. When the alloy lies in instable region atom clustering takes place after the congruent ordering completes. It has also been found that the incubation period of the phase transformation is shortened as the composition increases.
其他文献
1 病历患者,女,46岁,体检发现左乳肿物20余天.体格检查:全身皮肤、巩膜无黄染,浅表淋巴结未及肿大,心肺腹未见异常;双侧乳房对称,生理性下垂,表面皮肤未见"桔皮样征"、"酒窝
期刊
社会经济不断高速发展,我们人类正面临着严重的环境污染、生态恶化以及资源短缺等诸多问题.石油机械作为能源开采的主要工具,采用绿色设计、使用中采用相应的绿色防腐措施,可
综述了专家系统在水产养殖病害领域上的应用,对水产养殖病害专家系统的发展提出建议。 The application of expert systems in the field of aquaculture diseases is revie
Under artificially-simulated complex salt-alkali stress, the levels of active oxygen metabolism in roots were studied using three-year-old cutting seedlings of
以茅荆坝自然保护区为研究对象,利用SPSS软件对影响游客数量的相关因子进行了回归分析.结果表明:旅行费用是影响游客数量的最重要因子.通过旅行费用法(TCM)计算出茅荆坝自然
尼泊尔计划开发下阿润(Lower Arun)CFRD工程,计划装机400 MW,工程完工后其所发电力将主要输往印度。介绍了工程主要的设计技术参数、前期研究、可行性研究及布置方案,并论证
小儿秋季腹泻多属轮状病毒感染引起的急性肠道炎症,秋冬季节发病率较高,严重影响着小儿的身体健康。西医在治疗小儿秋季腹泻方面尚无特效药物,多采用保护胃肠黏膜,维持水、电
The surface of Ti-50.8Ni at% shape memory alloy was melted by an Nd-YAG laser. The Ti/Ni and Ti4+/Ti atomic concentration ratios at the surface were changed sig
Laser cladding is performed to improve the surface properties of metallic machine components. Extensive work is being conducted to investigate the relationships
Laser surface remelting of medium Ni-Cr infinite chilling cast iron was performed with a continuous wave CO2 laser beam with the power of 7 KW under the argon s