Age Hardening of Rapidly-Solidified Mo-Th-B Alloys

作     者：Ning, Yuantao Ning Yuantao Institute of Precious Metals,Kunming,China

作者机构：Inst of Precious Metals China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：1989年第9卷第1期

页      面：19-22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）] 

主　　题：Molybdenum Metallography Microstructures X ray Analysis 

摘      要：Splat foils with 30-35 μm thickness and spum ribbon with 50-55 μm thickness of Mo-4Th-0.4B and Mo-8Th-0.8B were made by arc melt hammer-anvil and melt spinning techniques. Both alloys have high hardness and a strong age hardening response, especially Mo-8Th-0.8B. The precipitates associated with age hardening were ThB4(tetragon) and Mo2B (C16, BTC). The times for reaching a age hardening peak for both alloys are not the same and depended on the precipitation extent of Th and B solutes from the metastable solid solution. Grain refinement was observed. The work indicates that new high strength Mo alloys can be developed by rapid solidification.