文章信息/Info

Title:

TRIP-reinforced bulk metallic glass

作者:

宋溫麗; 宋凱凱; 劉增乾; ; 李然; 吳淵; 呂昭平

1北京科技大學新金屬材料國家重點實驗室，北京100083

2西北工業大學空間應用物理與化學教育部重點實驗室，西安710072

3北京航空航天大學，材料科學與工程學院，空天材料與服役教育部重點實驗室，北京100191

4中國科學院金屬研究所，沈陽材料科學國家（聯合）實驗室，沈陽110016

Author(s):

Song Wenli1;  Song Kaikai2;  Liu Zengqian3; 4;  Li Ran3;  Wu Yuan1*;  Lu Zhaoping1

關鍵詞:

金屬玻璃; 非晶合金; 相變誘導塑性; 韌塑化

DOI:

10.7502/j.issn.1674-3962.2014.05.06

文獻標志碼:

A

摘要:

塊體非晶合金因其獨特的原子結構而具有許多優異的力學性能，成為近年來材料領域的研究熱點之一，但是由于其在變形過程中的室溫脆性和應變軟化等關鍵問題一直制約其大規模工程應用。為解決此問題，塊體非晶合金領域的研究者們提出了多種方案，其中利用“相變誘導塑性”（Transformation-induced plasticity, TRIP）概念來制備塊體非晶合金復合材料來韌塑化非晶合金成為卓有成效的方案之一，通過此方法成功的制備出了同時具有拉伸塑性和加工硬化能力的非晶復合材料。然而，該類塊體非晶合金復合材料要求更嚴格的形成條件，同時具有更復雜的多相協調變形過程和更獨特的性能優化方案。本文從該類塊體非晶合金復合材料的形成、性能特點、韌塑化機理及性能優化等方面進行綜述，并對未來發展進行了簡要展望。

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.