Effects of Cold Rolling Reduction and Annealing Temperature on Microstructure and Texture Evolution of Cu-44%Ni Alloy

IF 0.6 4区 材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY 稀有金属材料与工程 Pub Date : 2018-07-01 DOI:10.1016/S1875-5372(18)30165-6
Chen Xingpin, Chen Dan, Sun Hongfu, Wang Lixia
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引用次数: 4

Abstract

The effects of cold rolling reduction and annealing temperatures on the formation of cube texture and microstructural evolution have been investigated in Cu-44%Ni alloy. The results show that the recrystallized cube texture is strengthened by either increasing the rolling reduction or increasing the annealing temperature. And the strong cube texture can be observed for the severely cold-rolled (>90%) alloy after annealing at high temperature (>900 °C). Furthermore, high-angle grain boundaries (HAGBs) and annealing twin boundaries (Σ3 boundaries) decrease with the increase of rolling reduction. However, during isochronal annealing, the trend of Σ3 boundaries is consistent with that of HAGBs, which firstly increases during recrystallization process and then decreases with further increasing temperature. After annealing at 1100 °C for 1 h, the 99% cold-rolled Cu-44%Ni alloy obtains the fraction of the cube texture 99.8%, and the fractions of HAGBs and Σ3 boundaries are 2.5% and 1.3%, respectively.

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冷轧压下和退火温度对Cu-44%Ni合金组织和织构演变的影响
研究了冷轧压下温度和退火温度对Cu-44%Ni合金立方体织构形成和显微组织演变的影响。结果表明:提高轧制压下量或提高退火温度均能强化再结晶的立方织构;在高温(>900℃)退火后,重冷轧(>90%)合金出现了较强的立方织构。高角度晶界(HAGBs)和退火孪晶界(Σ3)随着轧制压下量的增加而减小。而在等时退火过程中,Σ3边界的变化趋势与HAGBs一致,在再结晶过程中先增大后减小。经1100℃退火1 h后,99%冷轧Cu-44%Ni合金的立方织构分数为99.8%,HAGBs和Σ3晶界分数分别为2.5%和1.3%。
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来源期刊
稀有金属材料与工程
稀有金属材料与工程 工程技术-材料科学:综合
CiteScore
1.30
自引率
57.10%
发文量
17973
审稿时长
4.2 months
期刊介绍:
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