片状粉末冶金Al_2O_3/Al复合材料的热变形及加工图（英文）
|
摘要
采用Gleeble-1500D热模拟试验机在300~450°C、0.001~1.0 s-1条件下对不同铝片层厚度的Al2O3/Al复合材料进行变形行为研究。实验结果表明,在设定的温度下,流变应力随着应变速率的增加而增加,而在设定的应变速率下,流变应力随着温度的升高而降低。在所采用的实验条件下,片层Al2O3/Al复合材料的高温流变行为可以用双曲正弦函数来描述。Al2O3/Al-2μm和Al2O3/Al-1μm复合材料在进行真应变为0.6的热变形时最优加工工艺参数分别为300~330°C,0.007~0.03 s-1和335~360°C,0.015~0.06 s-1。而热加工图也明确了此两种复合材料的流变失稳区。
The deformation behaviors of Al2O3/Al composites were investigated by compressive tests conducted at temperature of 300-450 °C and strain rates of 0.001-1.0 s-1 with Gleeble-1500 D thermal simulator system. The results show that the flow stress increases with increasing strain rate and decreasing temperature. The hyperbolic sine constitutive equation can describe the flow stress behavior of Al2O3/Al composites, and the deformation activation energy and constitutive equations were calculated. The processing maps of Al2O3/Al-2 μm and Al2O3/Al-1 μm composites at strain of 0.6 were obtained and the optimum processing domains are in ranges of 300-330 °C, 0.007-0.03 s-1 and 335-360 °C, 0.015-0.06 s-1 for hot working, respectively. The instability zones of flow behavior can also be recognized by the maps.
The deformation behaviors of Al2O3/Al composites were investigated by compressive tests conducted at temperature of 300-450 °C and strain rates of 0.001-1.0 s-1 with Gleeble-1500 D thermal simulator system. The results show that the flow stress increases with increasing strain rate and decreasing temperature. The hyperbolic sine constitutive equation can describe the flow stress behavior of Al2O3/Al composites, and the deformation activation energy and constitutive equations were calculated. The processing maps of Al2O3/Al-2 μm and Al2O3/Al-1 μm composites at strain of 0.6 were obtained and the optimum processing domains are in ranges of 300-330 °C, 0.007-0.03 s-1 and 335-360 °C, 0.015-0.06 s-1 for hot working, respectively. The instability zones of flow behavior can also be recognized by the maps.
引文
[1]MIRACLE D B.Metal matrix composites-from science to technological significance[J].Composites Science and Technology,2005,65:436-440.
[2]CHEN X G,DA SILVA M,GOUGEN P,ST-GEORGES L.Microstructure and mechanical properties of friction stir welded AA6063-B4C metal matrix composites[J].Materials Science and Engineering A,2009,518:174-184.
[3]LIN Jian,LI Zhi-qiang,FAN Gen-lian,ZHANG Di.A flake powder metallurgy approach to Al2O3/Al biomimetic nanolaminated composites with enhanced ductility[J].Scripta Materialia,2011,65:412-415.
[4]KAI X Z,LI Z Q,FAN G L,GUO Q,XIONG D B,ZHANG W L,SU Y S,LU W J,MOON W J,ZHANG D.Enhanced strength and ductility in particulate-reinforced aluminum matrix composites fabricated by flake powder metallurgy[J].Materials Science and Engineering A,2013,587:46-53.
[5]LIN Jian,LI Zhi-qiang,FAN Gen-lian,CAO Lin-lin,ZHANG Di.Strong and ductile carbon nanotube/aluminum bulk nanolaminated composites with two-dimensional alignment of carbon nanotubes[J].Scripta Materialia,2012,66:331-334.
[6]KAI Xi-zhou,LI Zhi-qiang,FAN Gen-lian,GUO Qiang,TAN Zhan-qiu,ZHANG Wen-long,SU Yi-shi,LU Wei-jie,MOON W J,ZHANG Di.Strong and ductile particulate reinforced ultrafine-grained metallic composites fabricated by flake powder metallurgy[J].Scripta Materialia,2013,68:555-558.
[7]WANG Yuan-zhu.Comment on“characteristics of superplasticity domain in the processing map for hot working of an Al alloy2014-20vol.%Al2O3 metal matrix composite”[J].Materials Science and Engineering A,1996,212:178-181.
[8]PARK B G,CROSKY A G,HELLIER A K.Material characterisation and mechanical properties of Al2O3-Al metal matrix composites[J].Journal of Materials Science,2001,36:2417-2426.
[9]AGHAJANIAN M K,LANGENSIEPEN R A,ROCAZELLA M A,LEIGHTON J T,ANDERSSON C A.The effect of particulate loading on the mechanical behaviour of Al2O3/Al metal matrix composites[J].Journal of Materials Science,1993,28:6683-6690.
[10]PRASAD Y V R K,GELEL H L,DORAIVELU S M,MALAS J C,MORGAN J T,LARK L A,BARKER D R.Modeling of dynamic materials behavior in hot deformation:forging of Ti 6242[J].Metallurgical Transactions A,1984,15:1883-1892.
[11]SELLARS C M,MCTEGART W J.On mechanism of hot deformation[J].Acta Merallurgica,1966,14:1136-1138.
[12]ZHOU H T,LI Q B,ZHAO Z K,LIU Z C,WEN S F,WANG Q D.Hot workability characteristics of magnesium alloy AZ80-A study using processing map[J].Materials Science and Engineering A,2010,527:2022-2026.
[13]LI Miao-quan,LIU Yu-li,WU Shi-chun,WU Xiao-wei.Superplastic deformation of duralumin LY12CZ under an electric field[J].Journal of Materials Processing Technology,1994,40(3-4):385-393.
[14]AHAMED H,SENTHILKUMAR V.Hot deformation behavior of mechanically alloyed Al6063/0.75Al2O3/0.75Y2O3 nano-compositeA study using constitutive modeling and processing map[J].Materials Science and Engineering A,2012,539:349-359.
[15]YANG Yong-biao,ZHANG Zhi-min,ZHANG Xing.Processing map of Al2O3 particulate reinforced Al alloy matrix composites[J].Materials Science and Engineering A,2012,558:112-118.
[16]PRASAD Y V R K.Recent advances in the science of mechanical processing[J].Indian Journal of Technology,1990,28(6-8):435-451.
[17]RAJAMUTHAMILSELVAN M,RAMANATHAN S,KARTHIKEYAN R.Processing map for hot working of Si Cp/7075Al composites[J].Transactions of Nonferrous Metals Society of China,2010,20(4):668-674.
[18]ZHOU Ge,DING Hua,CAO Fu-rong,HAN Yin-ben,ZHANG Bei-jiang.Flow instability criteria in processing map of superalloy GH79[J].Transactions of Nonferrous Metals Society of China,2012,22(7):1575-1581.
[2]CHEN X G,DA SILVA M,GOUGEN P,ST-GEORGES L.Microstructure and mechanical properties of friction stir welded AA6063-B4C metal matrix composites[J].Materials Science and Engineering A,2009,518:174-184.
[3]LIN Jian,LI Zhi-qiang,FAN Gen-lian,ZHANG Di.A flake powder metallurgy approach to Al2O3/Al biomimetic nanolaminated composites with enhanced ductility[J].Scripta Materialia,2011,65:412-415.
[4]KAI X Z,LI Z Q,FAN G L,GUO Q,XIONG D B,ZHANG W L,SU Y S,LU W J,MOON W J,ZHANG D.Enhanced strength and ductility in particulate-reinforced aluminum matrix composites fabricated by flake powder metallurgy[J].Materials Science and Engineering A,2013,587:46-53.
[5]LIN Jian,LI Zhi-qiang,FAN Gen-lian,CAO Lin-lin,ZHANG Di.Strong and ductile carbon nanotube/aluminum bulk nanolaminated composites with two-dimensional alignment of carbon nanotubes[J].Scripta Materialia,2012,66:331-334.
[6]KAI Xi-zhou,LI Zhi-qiang,FAN Gen-lian,GUO Qiang,TAN Zhan-qiu,ZHANG Wen-long,SU Yi-shi,LU Wei-jie,MOON W J,ZHANG Di.Strong and ductile particulate reinforced ultrafine-grained metallic composites fabricated by flake powder metallurgy[J].Scripta Materialia,2013,68:555-558.
[7]WANG Yuan-zhu.Comment on“characteristics of superplasticity domain in the processing map for hot working of an Al alloy2014-20vol.%Al2O3 metal matrix composite”[J].Materials Science and Engineering A,1996,212:178-181.
[8]PARK B G,CROSKY A G,HELLIER A K.Material characterisation and mechanical properties of Al2O3-Al metal matrix composites[J].Journal of Materials Science,2001,36:2417-2426.
[9]AGHAJANIAN M K,LANGENSIEPEN R A,ROCAZELLA M A,LEIGHTON J T,ANDERSSON C A.The effect of particulate loading on the mechanical behaviour of Al2O3/Al metal matrix composites[J].Journal of Materials Science,1993,28:6683-6690.
[10]PRASAD Y V R K,GELEL H L,DORAIVELU S M,MALAS J C,MORGAN J T,LARK L A,BARKER D R.Modeling of dynamic materials behavior in hot deformation:forging of Ti 6242[J].Metallurgical Transactions A,1984,15:1883-1892.
[11]SELLARS C M,MCTEGART W J.On mechanism of hot deformation[J].Acta Merallurgica,1966,14:1136-1138.
[12]ZHOU H T,LI Q B,ZHAO Z K,LIU Z C,WEN S F,WANG Q D.Hot workability characteristics of magnesium alloy AZ80-A study using processing map[J].Materials Science and Engineering A,2010,527:2022-2026.
[13]LI Miao-quan,LIU Yu-li,WU Shi-chun,WU Xiao-wei.Superplastic deformation of duralumin LY12CZ under an electric field[J].Journal of Materials Processing Technology,1994,40(3-4):385-393.
[14]AHAMED H,SENTHILKUMAR V.Hot deformation behavior of mechanically alloyed Al6063/0.75Al2O3/0.75Y2O3 nano-compositeA study using constitutive modeling and processing map[J].Materials Science and Engineering A,2012,539:349-359.
[15]YANG Yong-biao,ZHANG Zhi-min,ZHANG Xing.Processing map of Al2O3 particulate reinforced Al alloy matrix composites[J].Materials Science and Engineering A,2012,558:112-118.
[16]PRASAD Y V R K.Recent advances in the science of mechanical processing[J].Indian Journal of Technology,1990,28(6-8):435-451.
[17]RAJAMUTHAMILSELVAN M,RAMANATHAN S,KARTHIKEYAN R.Processing map for hot working of Si Cp/7075Al composites[J].Transactions of Nonferrous Metals Society of China,2010,20(4):668-674.
[18]ZHOU Ge,DING Hua,CAO Fu-rong,HAN Yin-ben,ZHANG Bei-jiang.Flow instability criteria in processing map of superalloy GH79[J].Transactions of Nonferrous Metals Society of China,2012,22(7):1575-1581.