Fabrication of lightweight 3D interpenetrated NiTi@Mg composite with superior bending properties
Year: 2024
Type: article
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.
Authors: Yu-jing LIU, Xiao-chun LIU, Kun-mao LI, Xiang WU, Sheng-feng ZHOU, Wei LI, Wen-cai ZHANG
Language: English
Subfield: Biomaterials
Field: Materials Science
Domain: Physical Sciences
Open Access status: diamond
Funders: Guangxi Key Laboratory of Information Materials, National Natural Science Foundation of China, Jinan University, Natural Science Foundation of Hunan Province, State Key Laboratory of Mechanical Transmissions, Fundamental Research Funds for the Central Universities, Basic and Applied Basic Research Foundation of Guangdong Province
OpenAlex ID: W4405366899