期刊
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
卷 489, 期 1-2, 页码 330-336出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2007.12.034
关键词
Ti-6.5Al-3.5Mo-1.5Zr-0.3Si; hot compression; duplex anneal
The present work investigated the effects of hot compression and heat treatment on the microstructure and tensile property of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy with a widmanstatten microstructure. During hot compression at 995 degrees C, the lamellar a phase in the widmanstatten structure was distorted, and an equiaxed microstructure was obtained by subsequent duplex annealing of the hot-compressed sample. The tensile strength and elongation were significantly improved by hot compressing at 995 degrees C. Duplex annealing treatment resulted in a further increase in ductility at the expense of slight decrease in strength. A good combination of tensile strength (990 MPa) and elongation (12.8%) has been obtained by hot compression at 995 degrees C followed by the duplex annealing treatment. (C) 2007 Elsevier B.V. All rights reserved.
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