期刊
POWDER METALLURGY OF TITANIUM: POWDER PROCESSING, CONSOLIDATION AND METALLURGY OF TITANIUM
卷 520, 期 -, 页码 281-288出版社
TRANS TECH PUBLICATIONS LTD
DOI: 10.4028/www.scientific.net/KEM.520.281
关键词
Direct powder rolling; Hydrogenation and dehydrogenation process; Commercial purity titanium; Green strip; Sintered strip; Mechanical properties
In this study, direct powder rolling was applied to make thin sheets from HDH (hydrogenation and dehydrogenation) powders. Effects of materials and process parameters on tensile properties of sintered sheets are investigated. In the direct powder rolling with two-horizontal counter-rotating rollers, materials parameters including powder size and process parameters such as roll gap, roll speed, and packing height are controlled. With -100mesh Ti powders, CP titanium sheets of a thickness up to 1.5mm and a width up to 300mm were obtained without any rolling defects. Sintering of the rolled strips was performed between 1000 degrees C and 1250 degrees C at 50 degrees C intervals for 1hour to 4 hours. The relative density of the sintered strips was found to be around 85 to 90 percent. After sintering, the complete densification was made by cold rolling, and microstructures and tensile properties were evaluated after annealing treatment at 750 degrees C for 2 hours.
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