Fabrication of lightweight 3D interpenetrated NiTi@Mg composite with superior bending properties

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China Pub Date : 2024-11-01 DOI:10.1016/S1003-6326(24)66626-4

Yu-jing LIU , Xiao-chun LIU , Kun-mao LI , Xiang WU , Sheng-feng ZHOU , Wei LI , Wen-cai ZHANG

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引用次数: 0

Abstract

A NiTi@Mg interpenetrating phase composite with high strength and lightweight was prepared by additive manufacturing (AM) and infiltration technology, and the interface bonding, three-point bending properties and cyclic compressive properties of NiTi@Mg composites were investigated. The results show that the metallurgically bonded interface is formed at the NiTi/Mg interfaces. The bending strength and compressive strength of the NiTi@Mg composite are 2.5 and 1.7 times higher than those of the NiTi scaffold, respectively. During the bending deformation process, a large number of dislocations are observed to accumulate in the soft Mg area at the interface. Furthermore, the finite element model showed that the stress accumulation area, where the bending crack is initiated, is located at the interface of NiTi and Mg. The strengthening mechanism of NiTi@Mg composites is attributed to the twinning strengthening of Mg and heterogeneous structure strengthening.

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来源期刊

Transactions of Nonferrous Metals Society of China 工程技术-冶金工程

CiteScore

7.40

自引率

17.80%

发文量

8456

审稿时长

3.6 months

期刊介绍： The Transactions of Nonferrous Metals Society of China (Trans. Nonferrous Met. Soc. China), founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, INSPEC, CA, METADEX, AJ and JICST.