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系统研究了高变形率Ni基带中的加工和退火织构。用高纯Ni板(99.99%)为初始坯料进行高变形率室温轧制,加工率分别为80%,89%,93%和95%。对加工率为95%的试样在750℃,800℃,850℃,900℃,950℃和1000℃进行5h再结晶退火。用X射线衍射、极图、取向分布函数等方法分析;讨论了Ni基带加工织相,再结晶退火织构的形成和发展。结果表明:随总冷加工率的增加,在Ni基带的加工织构中,沿β取向线的{112}<111>和{123}<634>织构成分增加,{110}<112>绿构成分较低;总冷加工率为95%的试样中,随再结晶退火温度的增加,立方级构的体积分数逐渐增加,φ扫描的FWHM变窄;当再结晶退火温度较低时,立方织相成分偏离正常位置12°~13°,随退火温度的增加,如在1000℃退火,立方织相成分偏离正常位置程度逐渐缩小,变成sharp立方织构。
The processing and annealing texture in high deformation rate Ni matrix was systematically investigated. High-purity Ni plate (99.99%) was used as the starting material for high deformation rate room temperature rolling, the processing rates were 80%, 89%, 93% and 95% respectively. The samples with 95% processing rate were annealed at 750 ℃, 800 ℃, 850 ℃, 900 ℃, 950 ℃ and 1000 ℃ for 5h. X-ray diffraction, pole figure, orientation distribution function and other methods were analyzed. The formation and development of Ni matrix processing and recrystallization annealing texture were discussed. The results show that the texture components of {112} <111> and {123} <634> along the β orientation line increase with the increase of total cold working rate, and {110} <112> The volume fraction of cubic structure gradually increases and the FWHM of φ scan narrows with the increase of recrystallization annealing temperature. When the recrystallization annealing temperature is low, the cubic weave The phase composition deviates from the normal position by 12 ° ~ 13 °. With the increase of annealing temperature, for example, annealing at 1000 ℃, the cubic weave phase composition gradually decreases from the normal position and becomes sharp cubic texture.