钱圣男,李冬梅,王清,董闯,陈勃,侯冬芳,刘永健,谢巧英,陈清香,王华

• 1:三束材料改性教育部重点实验室大连理工大学材料与工程学院
• 2:中国兵器太原晋西春雷铜业有限公司

摘要(Abstract)：

采用了一种新的团簇成分式合金设计方法,对高强导电Cu-Ti合金进行了成分优化和实验验证。根据团簇加连接原子结构模型,Cu-Ti面心立方固溶体的高稳定性化学近程序结构单元可表述为团簇成分式[Ti-Cu_(12)]Cu_(3,6),其中[Ti-Cu_(12)]为以溶质原子Ti为中心的第一近邻配位多面体团簇,并搭配以3或6个连接原子。经过固溶处理(1173 K/2 h)和时效(723 K/4 h)处理,合金[Ti-Cu_(12)]Cu3(质量分数Cu-4.8Ti)的维氏显微硬度为304 MPa,导电率为9.8%IACS,[Ti-Cu_(12)]Cu_6(Cu-4.0Ti)的维氏硬度为283 MPa,导电率达11.3%IACS,其中后者导电性能相当于日本的Cu-3.39Ti合金,且成分点位于性能对成分变化不敏感区域。

关键词(KeyWords)： 高强导电合金;Cu-Ti合金;合金设计;团簇成分式

Abstract:

Keywords:

基金项目(Foundation): 国家国际科技合作专项(2015DFR60370);; 辽宁省基金(2015020202);; 中央高校基本科研业务费专项资金(DUT16ZD212)

作者(Author): 钱圣男,李冬梅,王清,董闯,陈勃,侯冬芳,刘永健,谢巧英,陈清香,王华

DOI: 10.13289/j.issn.1009-6264.2016.11.002

参考文献(References)：

• [1]Lu K,Lu J.Nanostructured surface layer on metallic materials induced by surface mechanical attrition treatment[J].Materials Science and Engineering A,2004,375:38-45.
• [2]Soffa W A,Laughlin D E.High-strength age hardening copper-titanium alloys:redivivus[J].Progress in Materials Science,2004,49(3):347-366.
• [3]Suzuki S,Hirabayashi K,Shibata H,et al.Electrical and thermal conductivities in quenched and aged high-purity Cu-Ti alloys[J].Scripta Materialia,2003,48(4):431-435.
• [4]Soffa W A,Laughlin D E.High-strength age hardening copper-titanium alloys:redivivus[J].Progress in Materials Science,2004,49(3):347-366.
• [5]Markandeya R,Nagarjuna S,Sarma D S.Precipitation hardening of Cu-Ti-Cr alloys[J].Materials Science and Engineering A,2004,371(1):291-305.
• [6]Suk H G,Hong H S.Effects of alloying element and heat treatment on properties of Cu-Ti alloys[J].Surface Engineering Association of South Korea,2009,42(5):246-249.
• [7]Semboshi S,Sato S,Ishikuro M,et al.Investigation of precipitation behavior in age-hardenable Cu-Ti alloys by an extraction-based approach[J].Metallurgical and Materials Transactions A,2014,45(8):3401-3411.
• [8]Nagarjuna S,Babu U C,Ghosal P.Effect of cryo-rolling on age hardening of Cu-1.5 Ti alloy[J].Materials Science and Engineering A,2008,491(1):331-337.
• [9]Semboshi S,Yamauchi S,Numakura H.Formation of titanium hydride in dilute Cu-Ti alloy by aging in hydrogen atmosphere and its effects on electrical and mechanical properties[J].Materials Transactions,2013,54(4):520-527.
• [10]Nagarjuna S,Balasubramanian K,Sarma D S.Effect of prior cold work on mechanical properties,electrical conductivity and microstructure of aged CuTi alloys[J].Journal of Materials Science,1999,34(12):2929-2942.
• [11]Markandeya R,Nagarjuna S,Sarma D S.Precipitation hardening of Cu-Ti-Zr alloys[J].Materials Science and Technology,2004,20(7):849-858.
• [12]Semboshi S,Numakura H,Gao W L,et al.Effect of prior cold-working on strength and electrical conductivity of Cu-Ti dilute alloy aged in a hydrogen atmosphere[J].Materials Science Forum,2010,654/656:1315-1318.
• [13]Semboshi S,Ikeda J,Iwase A,et al.Effect of boron doping on cellular discontinuous precipitation for age-hardenable Cu-Ti alloys[J].Materials,2015,8:3467-3478.
• [14]Semboshi S,Nishida T,Numakura H.Aging of Cu-3 at%Ti alloys in hydrogen atmosphere:Influence of hydrogen pressure on strength and electrical conductivity[J].Materials Transactions,2011,52(4):605-609.
• [15]Mackay A L,Finney J L.Structuration[J].Journal of Applied Crystallography,1973,6(4):284-289.
• [16]Dong C,Wang Q,Qiang J B,Wang Y M,et al.From clusters to phase diagrams:composition rules of quasicrystals and bulk metallic glasses[J].Journal of Physics D:Applied Physics,2007,40(15):R273.
• [17]Hong H L,Wang Q,Dong C,et al.Understanding the Cu-Zn brass alloys using a short-range-order cluster model:significance of specific compositions of industrial alloys[J].Scientific Reports,2014:4.
• [18]Takeuchi A,Inoue A.Classification of bulk metallic glasses by atomic size difference,heat of mixing and period of constituent elements and its application to characterization of the main alloying element[J].Materials Transactions,2005,46(12):2817-2829.
• [19]Zhang J,Wang Q,Wang Y,et al.Highly corrosion-resistant Cu 70(Ni,Fe,Mn,Cr)30 cupronickel designed using a cluster model for stable solid solutions[J].Journal of Alloys and Compounds,2010,505(1):179-182.
• [20]Semboshi S,Ishikuro M,Sato S,et al.Extraction of precipitates from age-hardenable Cu-Ti alloys[J].Materials Characterization,2013,82(5):23-31.

文章评论(Comment)：