CuNiCrSiBeZr合金强化工艺研究  

Strengthening Process of CuNiCrSiBeZr Alloy

作　　者：曾刚[1] 谢春生[1] 杨丹[1] 孙爰俊 孙景明 

机构地区：[1]江苏科技大学材料科学与工程学院 [2]镇江四洋特种金属材料制造有限公司

出　　处：《特种铸造及有色合金》2011年第2期191-194,206,共4页Special Casting & Nonferrous Alloys

基　　金：江苏省科技攻关项目(BE200768)

摘　　要：研究了固溶、时效及冷变形+时效等工艺对无Co低Be的汽轮机转子槽楔材料CuNiCrSiBeZr合金组织与性能的影响。结果表明,该合金经960℃×1.5h固溶+30%～38%冷变形+490℃×3h时效处理后,合金具有优良的综合性能,其硬度(HB)为256,电导率为30.0MS/m,软化温度达到525℃,室温下抗拉强度为827MPa,屈服强度为779MPa,伸长率为16%,经超声波探伤仪探伤合格,满足了服役条件苛刻的汽轮发电机转子槽楔的使用要求。Effects of solid solution,aging and aging after cold deformation on microstructure and properties of the self-developed CuNiCrSiBeZr alloy with Co free and low Be for slot wedge in turbo-generator rotor were investigated.The results show that the alloy exhibits desirable comprehensive properties after solid solution at 960 ℃ for 1.5 hours +30%~38% cold deformation + aging treatment at 490 ℃ for 3 hours,where hardness,electric conductivity,softening point,ambient tensile strength and yield strength as well as elongation reach 256,30.0 MS/m,525 ℃,827 MPa,779 MPa and 16%,respectively,meeting the requirement of slot wedge in turbo-generator rotor.

关 键 词：槽楔 CuNiCrSiBeZr合金 时效处理 硬度 电导率 

分 类 号：TG156.92[金属学及工艺—热处理]