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采用放电等离子体烧结的方法制备了外层为Cu_(60)Ni_(40)合金,芯层为Ni_9W合金的Cu基复合坯锭,结合传统的RABiTS路线成功获得了无铁磁性、高强度、强立方织构的Cu_(60)Ni_(40)-Ni_9W-Cu_(60)Ni_(40)复合基带。利用EBSD技术对复合基带轧制织构及再结晶退火后的微取向特征进行了分析表征。测试结果表明:大变形量冷轧后复合基带表面形成了典型的铜型轧制织构,在截面方向上织构呈现梯度分布的特征,在再结晶退火后该复合基带表面立方织构含量达到了97.6%(<10°),并发现,在再结晶过程中立方织构优先在外层材料中形核、长大,并逐渐吞并周围的非立方晶粒。对其力学性能表征发现:该复合基带在室温下的屈服强度为170 MPa,达到了商业化Ni_5W合金基带的水平。
The Cu-based composite ingot with Cu_ (60) Ni_ (40) as the outer layer and Ni_9W as the core layer was prepared by spark plasma sintering. With the traditional RABiTS route, the non-ferromagnetic, high strength and strong Cubic Cu_ (60) Ni_ (40) -Ni_9W-Cu_ (60) Ni_ (40) composite. EBSD technique was used to characterize the microstructure and microstructure characteristics of the composite base strip after recrystallization annealing. The test results show that the surface of the composite base tape after cold rolling has a typical copper rolling texture with a gradient distribution in the cross-sectional direction. The cubic texture of the composite base tape after recrystallization annealing reaches 97.6% (<10 °), and found that the cubic texture preferentially nucleates and grows in the outer layer during recrystallization and gradually engulfs the surrounding non-cubic grains. Characterization of its mechanical properties found that the yield strength of the composite substrate at room temperature was 170 MPa, which reached the level of commercial Ni_5W alloy substrate.