[1]蒋敏强.非晶合金塑性理论进展[J].中国材料进展,2014,(5):257-264.[doi:10.7502/j.issn.1674-3962.2014.05.01]
　JIANG Minqiang. Advances in Plasticity theory for Amorphous Alloys[J].MATERIALS CHINA,2014,(5):257-264.[doi:10.7502/j.issn.1674-3962.2014.05.01]
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非晶合金塑性理论进展()
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
期数:
2014年第5期
页码:
257-264
栏目:
特约研究论文
出版日期:
2014-05-31

文章信息/Info

Title:
 Advances in Plasticity theory for Amorphous Alloys
作者:
蒋敏强
中国科学院力学研究所 非线性力学国家重点实验室，北京，100190
Author(s):
 JIANG Minqiang
State Key Laboratory of Nonlinear Mechanics, Chinese Academy of Sciences, Beijing 100190, China
关键词:
非晶合金; 塑性流动; 塑性理论; 流动局部化
DOI:
10.7502/j.issn.1674-3962.2014.05.01
文献标志码:
A
摘要:
非晶合金是一类兼具玻璃和金属双重特性的新型材料，已经在国防、空天等领域显示出广阔的应用前景。非晶合金内部原子排列长程无序，没有位错、晶界等传统意义上的晶体缺陷。因此，基于位错、孪生等机制的经典塑性理论在描述这类材料的塑性行为时遇到了极大的挑战。本文主要介绍了目前几种代表性的非晶塑性流动理论：自由体积理论、剪切转变理论、剪切转变区理论以及协同剪切模型，并对非晶塑性流动局部化剪切带机理进行了评述，最后简要展望了非晶塑性机理发展的几个问题。
Abstract:
 Amorphous alloys represent a class of new materials with both glassy structure and atomic bonding, showing widely potential applications in fields of defense and aerospace projects. Atomic packing is long-range disordered in amorphous alloy, without traditional crystalline defects such as dislocations and grain boundaries. Therefore, the classical theory of plasticity based on dislocations and twins poses a great challenge to describe the plasticity of amorphous alloys. In this paper, we briefly review several representative theories for amorphous plasticity including free volume theory, shear transformation theory, shear transformation zone theory and cooperative shear model. In addition, our recent advances in understanding the plastic flow localization into shear-bands are reviewed. Finally, we identify a number of important points that deserve further investigation in this field.
Keywords: amorphous alloy; plastic flow; plasticity theory; flow localization
更新日期/Last Update: 2014-04-28