非晶合金的相变韧塑化-中国材料进展

文章信息/Info

作者:: 宋温丽; 宋凯凯; 刘增乾; ; 李然; 吴渊; 吕昭平; 1北京科技大学新金属材料国家重点实验室，北京100083

2西北工业大学空间应用物理与化学教育部重点实验室，西安710072

3北京航空航天大学，材料科学与工程学院，空天材料与服役教育部重点实验室，北京100191

4中国科学院金属研究所，沈阳材料科学国家（联合）实验室，沈阳110016

Author(s):: Song Wenli1; Song Kaikai2; Liu Zengqian3; 4; Li Ran3; Wu Yuan1*; Lu Zhaoping1

摘要:: 块体非晶合金因其独特的原子结构而具有许多优异的力学性能，成为近年来材料领域的研究热点之一，但是由于其在变形过程中的室温脆性和应变软化等关键问题一直制约其大规模工程应用。为解决此问题，块体非晶合金领域的研究者们提出了多种方案，其中利用“相变诱导塑性”（Transformation-induced plasticity, TRIP）概念来制备块体非晶合金复合材料来韧塑化非晶合金成为卓有成效的方案之一，通过此方法成功的制备出了同时具有拉伸塑性和加工硬化能力的非晶复合材料。然而，该类块体非晶合金复合材料要求更严格的形成条件，同时具有更复杂的多相协调变形过程和更独特的性能优化方案。本文从该类块体非晶合金复合材料的形成、性能特点、韧塑化机理及性能优化等方面进行综述，并对未来发展进行了简要展望。

Abstract:: Bulk metallic glasses (BMGs) show unique mechanical properties due to their long-range disordering atomic structure and are regarded as one of promising engineering materials. But their room-temperature brittleness and strain-softening during deformation have beena stumbling block for practical structural applications. To solve this problem, many approaches have been developed among which the concept of “transformation-induced plasticity” (TRIP) was proved to be effective to enhance both tensile ductility and work-hardening capability of metallic glasses. BMG composites with not only tensile ductility but also work-hardening capability was successfully fabricated by this approach. However, the TRIP-phase-reinforced BMG composites have unique formation and deformation mechanisms. In this brief review, the formation, deformation behavior, optimizing strategies and ductilizing mechanism were summarized and the potential developments were also discussed.