变形及热处理后CuCr25触头材料的性能研究.pdfVIP

第28 卷增刊 材料热处理学报 Vol. 28 Supplement TRANSACTIONS OF 如t:ATERIALS AND HEAT TREATh缸NT Au♂1St 2007 2007 年 8 月 变形及热处理后 CuCr25 触头材料的性能研究 回保红 1 ，朱建娟 1 ，刘平2 ，任风章 1 ，刘 勇 1 ，贸淑果 l (1.河南科技大学材料科学与工程学院，向南洛阳 471003; 2. 上海理工大学电功能材料研究所，上悔 200093) 摘 要z 本文在中频感应炉中采用大气熔铸方尬制备了 CuCr25 合金触头材制，楝讨了时放以及变形对导电率和~徽艘度的影 响，并测定了该合金的抗软化温度。结果表明z 在950C x 1h 固溶后，经树。℃时放6h可辄得较高的导电率和显微髓度:因 搭眉经聊。变形在440C时效 2h 眉，导电惑和显撤硬度分别可达57%IACS 和 174 日V. 比固溶后直接时般分别高出 10%IACS 和27HV; 井测得合金的抗软化掘度的为 55 C. 提键询:阎榕;时娘:导电率:跟微硬度:抗软化翻度 中图分§监号z 二rGl46.l Research on properties of CuCr25 contact materials after deformation and heat treatment 1 TIAN Bao-hong ,ZH即U川川J且阳i阳阳m胁叫创m盼叫n如l卜叶巾嗣才j (1. SchoolofM刷rials Science and Engineering, Henan University ofScience and Technology, Luoyang 471003 , China; 2.lnsti阳te ofElectric Functional Materials ,University ofShanghai for Science and Technology, Shanghai 200093 , China) Abstraet: The atmospb创c cast CuCr25 alloy ∞ntactma阳ial which prepared by median frequency inductioo fumace w阴阳died. The influence of aging and deformation 00 elec1riω1 conductivity and miαohar也ess were discussed. And the s。如ningtem阳刷m wωmeasured. The results show 伽t after soluti仙似 950C for 1 h 础d aging at 440C如 6 h the a1 10y obtains good electrica1 ωnductivity and miω0- hardness. Solu阳.8， 4阳cold det1棚ing and then 咿ng at 440C for 2 h，也e el，削ical conductivity reacbes 57%IACS 阳d the microhardness reaches 174 日V which are 1阳IACS higber in elec创ω1ωnductivity and 27 HV in microhardness than 也at ofa110y directly aging after 801四on without deformation. And the so伽ning 阳nperature ofthe alloy was 胁。ut 550C. Key words: solid 801ution; aging; electrical COD曲创ivity; microhardness;ω伐ening 伽m伊rature