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非晶合金塑脆断裂转变的控制参数
Alternative TitleInherent parameters governing ductile-brittle transition in metallic glasses
陈艳; 戴兰宏
Source Publication中国科学. 物理学, 力学, 天文学
2012-06-20
Volume42Issue:6Pages:551-559
ISSN1674-7275
Abstract材料的塑脆断裂转变及机理一直以来都是材料和力学领域的研究热点.近百年来,针对晶体材料的塑脆行为,相继发展了一系列弹、塑性的起裂临界判据及塑脆表征参数.非晶合金作为近年来涌现的一类新型结构材料,因具有优异的力学性能,在国防、空天等领域显示出广阔的应用前景.然而,该材料变形局部化剪切带导致的室温低塑性极大地限制了其工程应用.因此,弄清非晶合金的塑脆断裂行为及转变条件显得尤为迫切.在传统理论的基础上,结合非晶合金固有的特性,目前已发展了塑脆转变的单参数和双参数控制理论.本文将对这些理论进行简要的回顾,进一步揭示这些控制参数的相互关联及非晶合金塑脆转变的实质.
Other AbstractThe ductile-brittle transition and its mechanism are the hot research topics in the field of material and mechanics.In recent hundred years,the critical conditions for cracking and the governing parameters on ductility have developed for crystalline solids.Metallic glasses(MGs) as an emerging class of structural materials in recent years,show a broad potential applications due to their excellent mechanical properties.However,the low plasticity caused by highly strain localization greatly restrains them from...
Keyword塑脆转变 拉压强度差异 非晶合金 断裂 剪切带
Subject Area新型材料的力学问题
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Indexed ByCSCD
Language中文
Funding Organization国家自然科学基金(批准号:11132011,0810011021,Y110071021,1010011021);国家自然科学基金委员会-中国工程物理研究院联合基金(批准号:Y010091021); 国家重点基础研究发展计划(编号:0910141091,纳米材料及结构的力学新原理及精细表征技术研究=魏悦广)资助项目
CSCD IDCSCD:4598102
DepartmentLNM冲击动力学与新型材料力学性能
Classification二类
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46405
Collection非线性力学国家重点实验室
Corresponding Author戴兰宏
Recommended Citation
GB/T 7714
陈艳,戴兰宏. 非晶合金塑脆断裂转变的控制参数[J]. 中国科学. 物理学, 力学, 天文学,2012,42(6):551-559.
APA 陈艳,&戴兰宏.(2012).非晶合金塑脆断裂转变的控制参数.中国科学. 物理学, 力学, 天文学,42(6),551-559.
MLA 陈艳,et al."非晶合金塑脆断裂转变的控制参数".中国科学. 物理学, 力学, 天文学 42.6(2012):551-559.
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