W-Cu-Zr三元系相图900℃等温截面的测定
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摘要
采用真空电弧熔炼法熔炼W-Cu-Zr三元系合金,在900℃下退火90天后取出样品立即淬火,采用XRD、SEM等测定其平衡显微组织。实验测得W-Cu-Zr三元系900℃等温截面中有4个三相区:Cu51Zr14+(Cu)+(W)、(W)+Cu51Zr14+Cu8Zr3、CuZr_2+W_2Zr+Cu_8Zr_3、(Zr)+CuZr_2+W_2Zr,1个两相区:(W)+W_2Zr。W-Cu-Zr三元体系中没有检测到三元化合物。二元化合物Cu_(51)Zr_(14)、Cu_8Zr_3、CuZr_2中最大的含W量分别为2.88、1.15、1.7 at.%;W2Zr中最大的含Cu量为7.71 at.%。
W-Cu-Zr ternary system alloys were prepared by vacuum arc-melting method, the alloys annealed at 900 ℃for 90 days were quenched immediately, equilibrium microstructure were determined by XRD and SEM, et al. Four three-phase regions, Cu_(51)Zr_(14)+(Cu)+(W),(W)+Cu_(51)Zr_(14)+Cu_8Zr_3, CuZr_2+W_2Zr+Cu_8Zr_3,(Zr)+Cu Zr_2+W_2Zr and one two-phase region(W)+W_2Zr have been determined experimentally in the isothermal section of the W–Cu–Zr ternary system at 900 ℃. No ternary compound was detected in W–Cu–Zr ternary system.The maximum solubility of W in Cu_(51)Zr_(14), Cu_8Zr_3, CuZr_2 were 2.88, 1.15, 1.7 at.%, respectively, the maximum solubility of Cu in W_2Zr was 7.71 at.%.
W-Cu-Zr ternary system alloys were prepared by vacuum arc-melting method, the alloys annealed at 900 ℃for 90 days were quenched immediately, equilibrium microstructure were determined by XRD and SEM, et al. Four three-phase regions, Cu_(51)Zr_(14)+(Cu)+(W),(W)+Cu_(51)Zr_(14)+Cu_8Zr_3, CuZr_2+W_2Zr+Cu_8Zr_3,(Zr)+Cu Zr_2+W_2Zr and one two-phase region(W)+W_2Zr have been determined experimentally in the isothermal section of the W–Cu–Zr ternary system at 900 ℃. No ternary compound was detected in W–Cu–Zr ternary system.The maximum solubility of W in Cu_(51)Zr_(14), Cu_8Zr_3, CuZr_2 were 2.88, 1.15, 1.7 at.%, respectively, the maximum solubility of Cu in W_2Zr was 7.71 at.%.
引文
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[4]葛毅成,刘艾平,杨琳,等.热处理对C/C-Cu复合材料钨涂层结构和烧蚀性能的影响[J].粉末冶金材料科学与工程,2011,16(2):309-314.
[5]周哲,葛毅成,汪沅,等.C/C复合材料耐烧蚀W涂层[J].中国有色金属学报,2016,26(6):1272-1280.
[6]ZHOU Zhe,WANG Yuan,GONG Jieming,et al.Ablation resistance of C/C composites with atmospheric plasma-sprayed W coating[J].J Therm Spray Technol,2016.
[7]MASSALSKI T B.Binary Alloy Phase Diagrams[M].Metals Park,Ohio:ASM International,1990.
[8]CHANG Y A.Phase investigations in the system zirconium-tungsten[J].J Less-Common Met,1969,17:325-328.
[9]GUO Cuiping,LI Changrong,SHANG Shunli,et al.Thermodynamic description of the Ta-W-Zr system[J].Int.J.Mater.Res,2014,105(11):1048-1056.
[10]ZHOU Peng,PENG Yingbiao,DU Yong,et al.Thermodynamic modeling of the C-W-Zr system[J].Int.Journal of Refractory Metals and Hard Materials,2015,50:274-281.
[11]ARIAS D,ABRIATA J P.Cu-Zr(Copper-Zirconium)[J].J.Bulletin of Alloy Phase Diagrams,1990,11(5):452-459.
[12]ZENG K J,HAMALAINEN M.A New Thermodynamic Description of the Cu-Zr System[J].J.Phase Equilib,1994,15(6):577-586.
[13]HE X C,WANG H,LIU H S,et al.Thermodynamic description of the Cu-Ag-Zr system[J].J Calphad,2006,30:367-374.
[14]WANG Na,LI Changrong,DU Zhenmin,et al.The thermodynamic re-assessment of the Cu-Zr system[J].J.Calphad,2006,30:461-469.
[15]KANG D H,JUNG I H.Critical thermodynamic evaluation and optimization of the Ag-Zr,Cu-Zr and Ag-Cu-Zr systems and its applications to amorphous Cu-Zr-Ag alloys[J].J Intermetallics,2010,18:815-833.
[16]GIERLOTKA W,ZHANG K C,CHANG Y P.Thermodynamic description of the binary Cu-Zr system[J].J.Alloys Compound,2011,509:8313-8318.Chimiques,1980,291:177-178.