烧结态W-80Cu合金高温压缩变形行为及本构关系
|
摘要
采用Gleeble-1500D热模拟试验机研究了烧结态W-80Cu合金的热变形行为,分析了热变形参数对合金流变应力的影响。研究结果表明:稳态流变应力与应变率呈正相关,与变形温度呈负相关。经热压缩试验后,材料孔隙度减少,两相界面结合紧密,相对致密度得以提高。利用Zene-Hollomon参数的双曲正弦模型,建立了烧结态W-80Cu合金热变形本构方程■。该方程预测值与试验观测值重合度好,能较好地描述烧结态W-80Cu合金高温热压缩下的致密化行为。
The thermodynamic behavior of sintered W-80 Cu alloy was investigated in isotermal compression experiment on the Gleeble-1500D thermal simulation testing machine.The effect of thermal deformation parameters on the flow stress of the alloy was analyzed.The results show that the the steady-state rheological stress of W-80Cu alloy increases with the increasing of strain rate,and decreases with the increaseing of deformation temperature.The interface of the tungsten and copper is combined tightly through the thermal compression experiment.The relative density of W-80 Cu alloy is improved because of the reduction of porosity.Moreover,the hypebolic sinusoidal model containing zene-hollomon parameters is used to establish the constitutive equation of the sintered W-80Cu alloy during high temperature compression densification process,which is■.The calculated value is in good agreement with the experimental value,which can describe the thermal deformation behavior of the sintered W-80Cu alloy during high temperature compression densification process.
The thermodynamic behavior of sintered W-80 Cu alloy was investigated in isotermal compression experiment on the Gleeble-1500D thermal simulation testing machine.The effect of thermal deformation parameters on the flow stress of the alloy was analyzed.The results show that the the steady-state rheological stress of W-80Cu alloy increases with the increasing of strain rate,and decreases with the increaseing of deformation temperature.The interface of the tungsten and copper is combined tightly through the thermal compression experiment.The relative density of W-80 Cu alloy is improved because of the reduction of porosity.Moreover,the hypebolic sinusoidal model containing zene-hollomon parameters is used to establish the constitutive equation of the sintered W-80Cu alloy during high temperature compression densification process,which is■.The calculated value is in good agreement with the experimental value,which can describe the thermal deformation behavior of the sintered W-80Cu alloy during high temperature compression densification process.
引文
[1] CHEN P,SHEN Q,LUO G,et al.The mechanical properties of W-Cu composite by activated sintering[J].International journal of refractory metals & hard materials,2013,36(6):220-224.
[2] 范景莲,严德剑,黄伯云,等.国内外钨铜复合材料的研究现状[J].粉末冶金工业,2003,13(2):9-14.
[3] 王宇飞,杨蕴林,王长生.钨铜合金/铬青铜复合结构电触头的超塑焊接[J].河南科技大学学报(自然科学版),2006,27(1):1-4.
[4] HAMIDI A G,ARABI H,RASTEGARI S.A feasibility study of W-Cu composites production by high pressure compression of tungsten powder[J].International journal of refractory metals and hard materials,2011,29(1):123-127.
[5] YUTAKA H,HIDEAKI H,TAKESHI I.Deformation behavior at room temperature of W-80vol%Cu composite[J].International journal of refractory metals and hard materials,2004,22(2/3):87-93.
[6] 黄丽枚,罗来马,丁孝禹,等.钨铜复合材料的研究进展[J].机械工程材料,2014,38(4):1-6.
[7] HANADO H,HIRAOKA Y.Room-temperature deformation behavior in the localized regions W-80vol%Cu composite[J].Advanced materials research,2007,15/17:255-260.
[8] XU L,SRINIVASAKANNAN C,ZHANG L,et al.Fabrication of tungsten-copper alloys by microwave hot pressing sintering[J].Journal of alloys and compounds,2016,658:23-28.
[9] QIU W,TPANG Y,XIAO Z,et al.Preparation of W-Cu alloy with high density and ultrafine grains by mechanical alloying and high pressure sintering[J].International journal of refractory metals and hard materials,2016,61:91-97.
[10] AHANGARKANI M,BORGI S,ABBASZADEH H,et al.The effect of additive and sintering mechanism on the microstructural characteristics of W-40Cu composites[J].International journal of refractory metals and hard materials,2012,32(5):39-44.
[11] 陈学文,周会军,陈天安,等.基于Hansel-Spittel模型的45Cr4NiMoV合金热变形行为[J].河南科技大学学报(自然科学版),2015,36(5):1-4.
[12] 李红,罗海文,杨才福,等.奥氏体不锈钢热轧加工性能的数学模型研究[J].材料导报,2006,20(10):102-106.
[13] 杨松涛,李继文,魏世忠,等.纯钼板坯高温塑性变形行为及本构方程[J].中国有色金属学报,2011,21(9):2126-2131.
[14] 张飞,沈健,闫晓东,等.2099合金的热变形行为及组织演化[J].中国有色金属学报,2014,24(7):1693-1699.
[15] 张晓伟,田保红,张毅,等.真空热压烧结W(50)/Cu-Al2O3的热压缩变形行为[J].材料热处理学报,2011,32(8):41-46.
[16] LU Y L,LIU J X,LI X K,et al.Hot deformation behavior of hastelly C276 suoeralloy[J].Transactions of nonferrous metals society of China,2012,22(S1):84-88.
[17] SELLARS C M,TEGART W J M.On the mechanism of hot deformation[J].Acta metallurgica,1966,14(9):1136-1138.
[18] ZENER C,HOLLOMON J H.Problems in non-elastic deformation of metals[J].Journal of applied physics,1946,17(2):69-82.
[19] 周盛武,董洪波,姜智勇,等.TB17钛合金热压缩流变应力分析及本构方程[J].塑性工程学报,2018,25(1):218-223.
[20] 裴文娇,郭训忠,王文涛,等.316L奥氏体不锈钢的高温流变行为[J].塑性工程学报,2014,21(3):104-110.
[21] 王玲玲,方林霞,刘雪,等.钨铜合金制备工艺分析[J].广州化工,2012,40(4):10-11.
[2] 范景莲,严德剑,黄伯云,等.国内外钨铜复合材料的研究现状[J].粉末冶金工业,2003,13(2):9-14.
[3] 王宇飞,杨蕴林,王长生.钨铜合金/铬青铜复合结构电触头的超塑焊接[J].河南科技大学学报(自然科学版),2006,27(1):1-4.
[4] HAMIDI A G,ARABI H,RASTEGARI S.A feasibility study of W-Cu composites production by high pressure compression of tungsten powder[J].International journal of refractory metals and hard materials,2011,29(1):123-127.
[5] YUTAKA H,HIDEAKI H,TAKESHI I.Deformation behavior at room temperature of W-80vol%Cu composite[J].International journal of refractory metals and hard materials,2004,22(2/3):87-93.
[6] 黄丽枚,罗来马,丁孝禹,等.钨铜复合材料的研究进展[J].机械工程材料,2014,38(4):1-6.
[7] HANADO H,HIRAOKA Y.Room-temperature deformation behavior in the localized regions W-80vol%Cu composite[J].Advanced materials research,2007,15/17:255-260.
[8] XU L,SRINIVASAKANNAN C,ZHANG L,et al.Fabrication of tungsten-copper alloys by microwave hot pressing sintering[J].Journal of alloys and compounds,2016,658:23-28.
[9] QIU W,TPANG Y,XIAO Z,et al.Preparation of W-Cu alloy with high density and ultrafine grains by mechanical alloying and high pressure sintering[J].International journal of refractory metals and hard materials,2016,61:91-97.
[10] AHANGARKANI M,BORGI S,ABBASZADEH H,et al.The effect of additive and sintering mechanism on the microstructural characteristics of W-40Cu composites[J].International journal of refractory metals and hard materials,2012,32(5):39-44.
[11] 陈学文,周会军,陈天安,等.基于Hansel-Spittel模型的45Cr4NiMoV合金热变形行为[J].河南科技大学学报(自然科学版),2015,36(5):1-4.
[12] 李红,罗海文,杨才福,等.奥氏体不锈钢热轧加工性能的数学模型研究[J].材料导报,2006,20(10):102-106.
[13] 杨松涛,李继文,魏世忠,等.纯钼板坯高温塑性变形行为及本构方程[J].中国有色金属学报,2011,21(9):2126-2131.
[14] 张飞,沈健,闫晓东,等.2099合金的热变形行为及组织演化[J].中国有色金属学报,2014,24(7):1693-1699.
[15] 张晓伟,田保红,张毅,等.真空热压烧结W(50)/Cu-Al2O3的热压缩变形行为[J].材料热处理学报,2011,32(8):41-46.
[16] LU Y L,LIU J X,LI X K,et al.Hot deformation behavior of hastelly C276 suoeralloy[J].Transactions of nonferrous metals society of China,2012,22(S1):84-88.
[17] SELLARS C M,TEGART W J M.On the mechanism of hot deformation[J].Acta metallurgica,1966,14(9):1136-1138.
[18] ZENER C,HOLLOMON J H.Problems in non-elastic deformation of metals[J].Journal of applied physics,1946,17(2):69-82.
[19] 周盛武,董洪波,姜智勇,等.TB17钛合金热压缩流变应力分析及本构方程[J].塑性工程学报,2018,25(1):218-223.
[20] 裴文娇,郭训忠,王文涛,等.316L奥氏体不锈钢的高温流变行为[J].塑性工程学报,2014,21(3):104-110.
[21] 王玲玲,方林霞,刘雪,等.钨铜合金制备工艺分析[J].广州化工,2012,40(4):10-11.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |