Zhongyou Que , Xingyu Li , Lin Zhang , En Mei , Chenguang Guo , Haishen Sun , Junming Liu , Mingli Qin , Gang Chen , Xuanhui Qu
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引用次数: 0
Abstract
Tungsten‑rhenium (W-Re) alloys are extensively used in medical devices, electronics, industrial equipment, aerospace, and nuclear energy sectors due to their low ductile-to-brittle transition temperature (DBTT), excellent high-temperature creep resistance, and superior properties related to recrystallization, ablation, and irradiation at elevated temperatures. However, with the advancement of technologies in these critical fields, the performance demands on W-Re alloys are continually increasing. As a result, optimizing the fabrication processes of W-Re alloys to enhance their performance under ultra-high temperature conditions has become essential. This review provides a detailed overview of the ultra-high temperature applications of W-Re alloys, the effects of Re alloying on their performance, various strengthening methods and mechanisms, and fabrication techniques. By analyzing the strengthening mechanisms, we identify that advancements in powder preparation, bulk densification, and deformation processing are key to improving the stable performance of W-Re alloys under extreme temperatures. Additionally, we address several challenges related to the fabrication methods and propose solutions. We hope that this comprehensive review will support researchers in developing W-Re alloys with enhanced performance while addressing the production and engineering challenges involved.
期刊介绍:
The International Journal of Refractory Metals and Hard Materials (IJRMHM) publishes original research articles concerned with all aspects of refractory metals and hard materials. Refractory metals are defined as metals with melting points higher than 1800 °C. These are tungsten, molybdenum, chromium, tantalum, niobium, hafnium, and rhenium, as well as many compounds and alloys based thereupon. Hard materials that are included in the scope of this journal are defined as materials with hardness values higher than 1000 kg/mm2, primarily intended for applications as manufacturing tools or wear resistant components in mechanical systems. Thus they encompass carbides, nitrides and borides of metals, and related compounds. A special focus of this journal is put on the family of hardmetals, which is also known as cemented tungsten carbide, and cermets which are based on titanium carbide and carbonitrides with or without a metal binder. Ceramics and superhard materials including diamond and cubic boron nitride may also be accepted provided the subject material is presented as hard materials as defined above.