CuCr1合金接触线的时效工艺及组织性能

doi:10.13251/j.issn.0254-6051.2021.05.023

摘要/Abstract

摘要： 采用固溶-连续挤压-时效-轧制-拉拔工艺和固溶-连续挤压-轧制-时效-拉拔工艺生产了CuCr1合金接触线,测试和分析了不同状态CuCr1合金的组织和性能。结果表明:连续挤压态CuCr1合金时效处理后的性能优于轧制时效态;连续挤压态CuCr1合金组织为条带状变形组织,有少量的回复组织;轧制态CuCr1合金组织为变形的晶粒和沿带状晶界分布的Cr相;时效态CuCr1合金组织主要为再结晶组织。固溶-连续挤压-时效-轧制-拉拔工艺生产的接触线抗拉强度达到489 MPa,导电率达到79.47%IACS,其性能优于固溶-连续挤压-轧制-时效-拉拔工艺生产的接触线。

关键词: CuCr1合金, 接触线, 组织性能, 时效, 连续挤压

Abstract: Contact wire of CuCr1 alloy was produced by solid solution-continuous extrusion-aging-rolling-drawing process and solid solution- continuous extrusion-rolling-aging-drawing process, and the microstructure and properties of the CuCr1 alloy in different states were tested and analyzed, respectively. The results show that after aging treatment, the performance of continuous-extruded CuCr1 alloy is better than rolled. The microstructure of continuous extruded CuCr1 alloy is banded deformation structure with a small amount of recovery structure. The microstructure of rolled CuCr1 alloy is deformed grains and Cr phase distributed along the banded grain boundary, and microstructure of the aged CuCr1 alloy is mainly recrystallized structure. After solution treating, continuous extruding, aging, rolling and drawing, the tensile strength of the contact wire reaches 489 MPa, conductivity reaches 79.47%IACS, and its performance is better than that produced by the solid solution-continuous extrusion-rolling-aging-drawing process.

Key words: CuCr1 alloy, contact wire, microstructure and properties, aging, continuous extrusion

中图分类号:

TG166.2

花思明, 张平则, 刘子利. CuCr1合金接触线的时效工艺及组织性能[J]. 金属热处理, 2021, 46(5): 143-149.

Hua Siming, Zhang Pingze, Liu Zili. Aging process, microstructure and properties of CuCr1 alloy contact wire[J]. Heat Treatment of Metals, 2021, 46(5): 143-149.

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