CuNiCoCrBeZr合金强化工艺与组织性能研究
Study on Strengthening Technology of CuNiCoCrBeZr Alloy and Its Microstructure and Properties
杨 丹, 曾 刚, 谢春生
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作者单位：(江苏科技大学 材料科学与工程学院, 江苏 镇江 212003)
中文关键字：CuNiCoCrBeZr合金； 时效处理； 硬度； 导电率
英文关键字：CuNiCoCrBeZr alloy; aging treatment; hardness; conductivity
中文摘要：对CuNiCoCrBeZr合金进行了一系列的热处理强化工艺试验。 结果表明，该合金经940 ℃×1.5 h固溶+30%冷变形+490 ℃×3 h时效处理后， 其硬度为253 HB，导电率为57.76%IACS，室温下抗拉强度903 MPa，屈服强度861 MPa，伸长率16.24%， 其物理性能和力学性能均能满足服役条件苛刻的超(超)临界汽轮发电机转子槽楔的使用要求。
英文摘要：The strengthening technology of CuNiCoCrBeZr alloy was researched by heat treatment and cold deformation. The results show that, after solution treatment at 940 ℃ for 1.5 h, cold deformation of 30%, then aging at 490 ℃ for 3 h, the hardness and electric conductivity of the CuNiCoCrBeZr alloy can achieve 253 HB and 57.76 %IACS, respectively, and its strength (σb and σ0.2) and elongation (δ) can reach 903 MPa, 861 MPa and 16.24%, respectively at ambient temperature. The mechanical and physical properties of the alloy can meet the technical requirement of slot wedge used in ultra supercritical generator rotor.