某低温风洞用高强不锈钢弯刀小试件生产实践  

Production practice of small scimitar specimen of high strength stainless steel for low-temperature wind tunnel

作　　者：马东平[1] 张洪林 王长军[3] 陈万华[1] 孙明月[2] 王太江[1] MA Dong-ping;ZHANG Hong-lin;WANG Chang-jun;CHEN Wan-hua;SUN Ming-yue;WANG Tai-jiang(China Aerodynamics Research and Development Center,Mianyang 621000,Sichuan,China;Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,Liaoning,China;Special Steel Research Institute,Central Iron and Steel Research Institute,Beijing 100081,China)

机构地区：[1]中国空气动力研究与发展中心,四川绵阳621000 [2]中国科学院金属研究所,辽宁沈阳110016 [3]钢铁研究总院特殊钢研究所,北京100081

出　　处：《中国冶金》2021年第3期129-136,共8页China Metallurgy

摘　　要：某低温风洞弯刀采用00Cr12Ni10MoTi马氏体时效不锈钢制造(代号:S03)。分别采用构筑成形和三联特冶(真空感应熔炼+真空自耗电弧熔炼+电渣重熔)工艺路线研究了10t级S03钢小试件钢锭制备工艺。通过X射线衍射(XRD)、扫描电镜(SEM)和拉伸、冲击等评价方法,分别研究了冶炼和热处理工艺对S03钢组织及力学性能的影响。研究结果表明,构筑成形和三联特冶工艺均可实现10t级S03钢锭的制备,两步750℃固溶和500℃时效工艺可实现S03钢较好的综合力学性能,工艺研究结果为某低温风洞百吨级弯刀钢锭制备提供了技术支撑。A low-temperature wind tunnel scimitar is made of 00Cr12Ni10MoTi maraging stainless steel(S03).The ingot preparation process of 10tS03steel small test piece was studied by using the construction forming and triple special smelting(vacuum induction melting+vacuum consumable arc melting+electroslag remelting)process routes.Using X-ray diffraction(XRD),scanning electron microscopy(SEM),tensile test,impact test and other evaluation methods,the effects of smelting and heat treatment on the structure and mechanical properties of S03steel are studied.The research results show that both the construction forming and the triple special smelting process can achieve the preparation of 10tS03steel ingots.The two-step solution at 750℃and aging at 500℃can achieve better comprehensive mechanical properties of S03steel.The result of the process research provided technical support for the preparation of 100tscimitar steel ingots for a certain low-temperature wind tunnel.

关 键 词：低温风洞 弯刀 马氏体时效不锈钢 构筑成形 三联特冶 热处理工艺 

分 类 号：TG142.71[一般工业技术—材料科学与工程]