钒微合金化对高性能4J32合金微观组织和性能的影响  

Effect of Vanadium Microalloying on Microstructure and Properties of High Performance 4J32 Alloy

作　　者：马逵[1] 张腾中 王方军 王东哲 甄大崴 MA Kui;ZHANG Tengzhong;WANG Fangjun;WANG Dongzhe;ZHEN Dawei(Beijing Institute of Space Mechanics&Electricity,Beijing 100094,China;Chongqing Materials Research Institute Co.,Ltd.,Chongqing 400707,China;National Instrument Functional Materials Engineering Technology Research Center,Chongqing 400707,China)

机构地区：[1]北京空间机电研究所,北京100094 [2]重庆材料研究院有限公司,重庆400707 [3]国家仪表功能材料工程技术研究中心,重庆400707

出　　处：《航天返回与遥感》2023年第1期144-152,共9页Spacecraft Recovery & Remote Sensing

基　　金：重庆市技术创新与应用发展专项(cstc2019jscx-fxydX0011);国机集团重大科技专项计划(SINOMAST-ZDZX-2018-05);工信部精准高效移栽装备产业化示范应用项目(TC210H02X)。

摘　　要：随着空间光学遥感器性能的发展,对光机结构的力、热稳定性提出了更高的要求,而材料性能的提升是提高结构稳定的重要技术途径。文章研究了钒(V)微合金化超因瓦(4J32)合金在不同锻造温度和热处理过程中合金的微观组织、一次碳化物、晶粒度及性能的变化。结果表明,通过向4J32合金中添加0.1%的微合金元素V,采用真空感应熔炼+电渣重熔的冶炼工艺,并将终锻温度控制在850℃,经过800~850℃固溶处理,产品显微组织更加均匀,具有较高的强度和较低的热膨胀系数,满足了空间光学遥感器支撑结构的力、热稳定性要求。With the development of the performance of space optical remote sensor,higher requirements are put forward for the mechanical and thermal stability of optical and mechanical structures,and the improvement of material performance is an important technology to improve the structural stability.The changes of microstructure,primary carbides,grain size and properties of vanadium(V)microalloyed super-invar(4J32)alloy during different forging temperatures and heat treatment were studied in this paper.The results show that by adding 0.1%microalloy element V to 4J32 alloy,adopting the smelting process of vacuum induction melting and electroslag remelting,and controlling the final forging temperature at 850℃,the product structure is more uniform,with higher strength and lower thermal expansion coefficient,which meets the requirements of force and thermal stability of the support structure of space optical remote sensor.

关 键 词：超因瓦合金 钒微合金化 固溶处理 热膨胀系数 空间光学遥感器 

分 类 号：TG132.1[一般工业技术—材料科学与工程] V447[金属学及工艺—合金]