载人航天
載人航天
재인항천
MANNED SPACEFLIGHT
2012年
3期
62-64,78
,共4页
修子扬%刘波%武高辉%姜龙涛%张强%陈国钦
脩子颺%劉波%武高輝%薑龍濤%張彊%陳國欽
수자양%류파%무고휘%강룡도%장강%진국흠
SiCp/Al复合材料%弯曲强度%热物理性能%空间应用
SiCp/Al複閤材料%彎麯彊度%熱物理性能%空間應用
SiCp/Al복합재료%만곡강도%열물이성능%공간응용
SiCp/Al Composite%Mechanical Properties%Thermal Properties%Space Application
以空间应用为背景,采用挤压铸造法制备了一种体积分数为45%、粒径分别为10μm和20μm的颗粒增强金属基(SiCp/Al)复合材料,并研究了材料的弯曲强度与热物理性能。经过T6处理的颗粒粒径分别为10μm、20μm的SiCp/Al复合材料的弯曲强度分别为950MPa和780MPa;热膨胀系数分别为13.100×10-6/℃、12.300×10-6/℃;100℃时热导率分别为157.29J/(m·℃·s)、175.23J/(m·℃·s);材料的热循环尺寸稳定性分别为8.7771×10-5、6.302×10-5因此,SiCp/Al复合材料是一种性能优异的空间用复合材料。
以空間應用為揹景,採用擠壓鑄造法製備瞭一種體積分數為45%、粒徑分彆為10μm和20μm的顆粒增彊金屬基(SiCp/Al)複閤材料,併研究瞭材料的彎麯彊度與熱物理性能。經過T6處理的顆粒粒徑分彆為10μm、20μm的SiCp/Al複閤材料的彎麯彊度分彆為950MPa和780MPa;熱膨脹繫數分彆為13.100×10-6/℃、12.300×10-6/℃;100℃時熱導率分彆為157.29J/(m·℃·s)、175.23J/(m·℃·s);材料的熱循環呎吋穩定性分彆為8.7771×10-5、6.302×10-5因此,SiCp/Al複閤材料是一種性能優異的空間用複閤材料。
이공간응용위배경,채용제압주조법제비료일충체적분수위45%、립경분별위10μm화20μm적과립증강금속기(SiCp/Al)복합재료,병연구료재료적만곡강도여열물이성능。경과T6처리적과립립경분별위10μm、20μm적SiCp/Al복합재료적만곡강도분별위950MPa화780MPa;열팽창계수분별위13.100×10-6/℃、12.300×10-6/℃;100℃시열도솔분별위157.29J/(m·℃·s)、175.23J/(m·℃·s);재료적열순배척촌은정성분별위8.7771×10-5、6.302×10-5인차,SiCp/Al복합재료시일충성능우이적공간용복합재료。
The particle reinforced metal composite is prepared for space application. The SiCp/Al composites with different size (10μ m, 20μm) are successfully fabricated through squeeze casting method with 45% volume fraction, and the thermal and mechanical properties of SiCp/Al composite are studied. Results show that after T6 heat treatment, the bending strength of SiCp/Al composites with particle size of 10μm and 20μm are 950 MPa and 780MPa respectively, and their average thermal of expansion coefficient are 13.100 × 10-6 /℃ and 12.300× 10-6/℃. When the temperature increases to 100℃, their thermal conductivity are 157.29 J/(m·℃ ·s) and 175.23J/(m·℃·s),and their heat cycle dimensional stability 8.7771×10-5 and 6.302×10-5 respectively. As a result, the SiCp/Al is an excellent composite in space application.