收录:
摘要:
Ni-8 at % W alloy ingots were prepared using a spark plasma sintering technique. The evolution of the microstructure, cold-rolling texture, and recrystallization texture of the Ni8W alloy were studied using X-ray diffractometry and electron backscatter diffractometry techniques. The results revealed the strong influence of the initial grain size on the cube texture formation of the annealed substrates. A strong cube texture was obtained in substrates with finer initial grains. A brass-type rolling texture was formed in the final cold-rolled tape after cold rolling. The cold-rolled tape mainly consisted of S, brass, and a weak {110} < 118 & rang; texture. The cube orientation nuclei did not have a nucleation advantage at the early stage of recrystallization. Large-scale twinning was exhibited in the cold-rolled microstructure at a high annealing temperature. The cube orientation and RD (rolling direction)-cube orientation textures, which transformed from the cube twin orientation and random orientation grains, were grown immediately at almost the same rate. The cube orientation and RD-cube orientation grains grew faster than other orientation grains throughout the whole grain growth process. Finally, a strong cube texture was obtained for the Ni-8 at % W substrate after an optimized annealing process.
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来源 :
PHYSICS OF METALS AND METALLOGRAPHY
ISSN: 0031-918X
年份: 2021
期: 14
卷: 122
页码: 1473-1481
1 . 2 0 0
JCR@2022
ESI学科: MATERIALS SCIENCE;
ESI高被引阀值:116
JCR分区:3