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刘婧,索红莉,马麟,喻丹,崔瑾,纪耀堂.轧制中间热处理温度对Ni7W/Ni12W/Ni7W复合基带组织及织构的影响[J].稀有金属材料与工程(英文),2018,47(10):2936~2941.[Liu Jing,Suo Hongli,Ma Lin,Yu Dan,Cui Jin and Ji Yaotang.Microstructure and Texture of Ni7W/Ni12W/Ni7W Composite Substrates at Different Intermediate Annealing Temperatures[J].Rare Metal Materials and Engineering,2018,47(10):2936~2941.]
Microstructure and Texture of Ni7W/Ni12W/Ni7W Composite Substrates at Different Intermediate Annealing Temperatures
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Received:March 28, 2017  Revised:May 05, 2017
Key words: high temperature superconductor  NiW substrate  intermediate annealing  deformation texture  cube orientation
Foundation item:国家自然科学基金(51571002);北京市自然科学基金(2172008);高等学校博士学科点专项科研基金资助(20121103110012);2013年度北京市自然科学基金重点项目B类(KZ201310005003);211计划专项资金
Author NameAffiliation
Liu Jing,Suo Hongli,Ma Lin,Yu Dan,Cui Jin and Ji Yaotang  
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      Ni7W/Ni12W/Ni7W composite substrates for YBa2Cu3O7-δ coated conductors were prepared by rolling assisted biaxially textured substrates route. A threefold intermediate annealing at different temperatures was introduced in the rolling process of Ni7W/Ni12W/Ni7W composite substrates to better its deformation texture. The recovery microstructure and the deformation texture of latitude and longitude section were studied with X-ray diffraction and electron backscattered diffraction to reveal the possible mechanism of temperature effects on rolling and strong cube texture formation processes. The results show that the highest cube area fraction is found in sample intermediately annealed at 600S°C/60Smin, in this way Ni7W/Ni12W/Ni7W composite substrates with high cube texture content of 95% (<10°) are obtained at a low recrystallization annealing temperature. Crystal orientation maps reveal that a higher amount of cube orientation exists in its recovery and initial recrystallization samples. Point to point misorientation files confirms the high grain boundary angle of these cube grains, which strongly boost the cube texture formation during subsequent recrystallization.