Cryogenic wear behaviors of a metastable Ti-based bulk metallic glass composite
作者机构：State Key Laboratory of Solidification ProcessingCenter of Advanced Lubrication and Seal MaterialsNorthwestern Polytechnical UniversityXi’an 710072China Shi-Changxu Innovation Center for Advanced MaterialsInstitute of Metal ResearchChinese Academy of SciencesShenyang 110016China
出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)
年 卷 期：2023年第134卷第3期
页 面：33-41页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：supported by the Natural Science Foundation of China(Nos.52175188,52171164) the Fundamental Research Funds for the Central Universities(No.3102019JC001) the National Key Research and Development Program of China(No.2021YFA0716303) the Natural Science Foundation of Liaoning Province(No.2021-MS-009) the Youth Innovation Promotion Association CAS(No.2021188)
主 题：Bulk metallic glass composites Martensitic transformation Cryogenic temperature Wear
摘 要：Bulk metallic glass composites(BMGCs)are proven to be excellent candidates for cryogenic engineering applications due to their remarkable combination of strength,ductility and ***,few efforts have been done to estimate their wear behaviors that are closely correlated to their practical ***,we report an improvement of∼48%in wear resistance for a Ti-based BMGC at the cryogenic temperature of 113 K as compared to the case at 233 K.A pronounced martensitic transformation(β-Ti→α -Ti)was found to coordinate deformation underneath the worn surface at 233 K but was significantly suppressed at 113 *** temperature-dependent structural evolution is clarified by artificially inducing a pre-notch by FIB cutting on aβ-Ti crystal,demonstrating a strain-dominated martensitic transformation in the *** improved wear resistance and suppressed martensitic transformation in BMGC at 113 K is associated with the increased strength and strong confinement of metallic glass on metastable crystalline phase at the cryogenic *** current work clarifies the superior cryogenic wear resistance of metastable BMGCs,making them excellent candidates for safety-critical wear applications at cryogenic temperatures.
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