热挤压对喷射沉积TiC_p/ZA35复合材料力学性能的影响
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摘要
采用热挤压对喷射沉积TiCp/ZA35复合材料进行致密化处理,分析挤压比压、挤压温度、挤压比及挤压速率对复合材料力学性能的影响。结果表明:热挤压后,TiCp/ZA35复合材料中反应生成的增强相TiC颗粒在晶界和晶内分布均较均匀,组织中析出MnAl6强化相,相对密度提高;当挤压比压为430 MPa,温度为285℃,挤压比为12,速率为8 mm/s时,挤压后复合材料的抗拉强度为485.0 MPa、伸长率为9.53%。
TiCp/ZA35 composites prepared by spray deposition were hot extruded to improve its densification. Influence of extrusion specific pressure,extrusion temperature,extrusion ratio and extrusion speed on mechanical properties of TiCp/ZA35 composites were studied. Microstructure observation indicates that the TiC particles synthesized in situ are evenly distributed uniformly in the hot extruded TiCp/ZA35 composites. The reinforcement phase MnAl6 is precipitated in the composites and the relative density of the composite is also improved. The optimal parameters for hot extrusion were proposed:Extrusion specific pressure of 430 MPa,squeezing temperature of 285 ℃,extrusion ratio of 12,extrusion rate 8 mm/s. The tensile strength and elongation of the hot extruded composites can achieve 485.0 MPa and 9.53%,respectively.
TiCp/ZA35 composites prepared by spray deposition were hot extruded to improve its densification. Influence of extrusion specific pressure,extrusion temperature,extrusion ratio and extrusion speed on mechanical properties of TiCp/ZA35 composites were studied. Microstructure observation indicates that the TiC particles synthesized in situ are evenly distributed uniformly in the hot extruded TiCp/ZA35 composites. The reinforcement phase MnAl6 is precipitated in the composites and the relative density of the composite is also improved. The optimal parameters for hot extrusion were proposed:Extrusion specific pressure of 430 MPa,squeezing temperature of 285 ℃,extrusion ratio of 12,extrusion rate 8 mm/s. The tensile strength and elongation of the hot extruded composites can achieve 485.0 MPa and 9.53%,respectively.
引文
[1]刘敬福,杨光,白彦华. Ni及热处理对ZA35合金阻尼性能的影响[J].兵器材料科学与工程,2014,37(4):52-54.
[2]DZUNIC D,MITROVIC S,BABIC M,et al. Nanoindentation of ZA-27 alloy based nanocomposites reinforced with Al2O3particles[J]. Tribology in Industry,2015,37(4):413-420.
[3]YU Sirong,LIU Jiaan,LUO Yanru,et al. Compressive behavior and damping property of ZA22/SiCP Composites foams[J]. Materials Science and Engineering A,2007,457(1/2):325-328.
[4]MISHRA S K,SATAPATHY A. Ceramic particulate filled ZA-27 metal matrix composites:Comparative analysis[J]. Materials Science and Technology,2013,30(12):1495-1499.
[5]刘敬福,李荣德.颗粒增强锌基复合材料研究现状与展望[J].铸造,2007,56(8):784-788.
[6]汤赟武,陈飞,曹志强,等.原位生成TiB2/ZA27复合材料的组织与耐摩擦磨损性能[J].稀有金属材料与工程,2014,43(1):194-198.
[7]ZHU Xuewei,WANG Richu,PENG Jian,et al. Microstructure evolution of spray-formed hypereutectic Al-Si alloy semisolid repeating process[J]. Trans Nonferrous Met Soc China,2014,24(6):1766-1772.
[8]刘英莉,尹建成,钟毅,等.约束喷射Al-20Si合金沉积坯的形状及显微组织[J].哈尔滨工程大学学报,2017,38(8):1273-1277.
[9]贺毅强,李俊杰,周海生,等.喷射沉积SiCp/Al基复合材料致密化及其显微组织与力学性能[J].中国有色金属学报,2017,27(7):1352-1360.
[10]刘敬福,李荣德,谢懿,等.喷射成形高锰ZA35合金的工艺及组织研究[J].材料工程,2010,37(6):63-67.
[11]蔡元华,程军胜,郝斌,等.过饱和Al-Zn-Mg-Cu-Mn合金热分解的XRD研究[J].北京科技大学学报,2006,28(7):650-653.
[2]DZUNIC D,MITROVIC S,BABIC M,et al. Nanoindentation of ZA-27 alloy based nanocomposites reinforced with Al2O3particles[J]. Tribology in Industry,2015,37(4):413-420.
[3]YU Sirong,LIU Jiaan,LUO Yanru,et al. Compressive behavior and damping property of ZA22/SiCP Composites foams[J]. Materials Science and Engineering A,2007,457(1/2):325-328.
[4]MISHRA S K,SATAPATHY A. Ceramic particulate filled ZA-27 metal matrix composites:Comparative analysis[J]. Materials Science and Technology,2013,30(12):1495-1499.
[5]刘敬福,李荣德.颗粒增强锌基复合材料研究现状与展望[J].铸造,2007,56(8):784-788.
[6]汤赟武,陈飞,曹志强,等.原位生成TiB2/ZA27复合材料的组织与耐摩擦磨损性能[J].稀有金属材料与工程,2014,43(1):194-198.
[7]ZHU Xuewei,WANG Richu,PENG Jian,et al. Microstructure evolution of spray-formed hypereutectic Al-Si alloy semisolid repeating process[J]. Trans Nonferrous Met Soc China,2014,24(6):1766-1772.
[8]刘英莉,尹建成,钟毅,等.约束喷射Al-20Si合金沉积坯的形状及显微组织[J].哈尔滨工程大学学报,2017,38(8):1273-1277.
[9]贺毅强,李俊杰,周海生,等.喷射沉积SiCp/Al基复合材料致密化及其显微组织与力学性能[J].中国有色金属学报,2017,27(7):1352-1360.
[10]刘敬福,李荣德,谢懿,等.喷射成形高锰ZA35合金的工艺及组织研究[J].材料工程,2010,37(6):63-67.
[11]蔡元华,程军胜,郝斌,等.过饱和Al-Zn-Mg-Cu-Mn合金热分解的XRD研究[J].北京科技大学学报,2006,28(7):650-653.