近净成形快堆支承环用316H不锈钢锻件的晶粒度与力学性能  

Grain size and mechanical properties of 316H stainless steel forgings for fast reactor support rings fabricated by near net shape forming

作　　者：任利国[1,2] 傅万堂[1] 张皓[1,3] 周岩 温瑞洁 赵德利 王宝忠 REN Li-guo;FU Wan-tang;ZHANG Hao;ZHOU Yan;WEN Rui-jie;ZHAO De-li;WANG Bao-zhong(State Key Laboratory of Metastable Materials Science and Technology,School of Materials Science and Engineering,Yanshan University,Qinhuangdao 066004,China;Tianjin Heavy Industries Research&Development Co Ltd,Tianjin 300457,China;China First Heavy Industry,Qiqihar 161042,China)

机构地区：[1]亚稳材料制备技术与科学国家重点实验室,燕山大学材料科学与工程学院,河北秦皇岛066004 [2]天津重型装备工程研究有限公司,天津300457 [3]中国第一重型机械股份公司,黑龙江齐齐哈尔161042

出　　处：《材料热处理学报》2024年第4期122-129,共8页Transactions of Materials and Heat Treatment

摘　　要：采用电渣重熔钢锭,经开坯锻造后,通过热挤压制备高品质坯料,随后在专用模具内进行胎模锻造成形,研制出国内首支外径15.5米、重量15吨的快堆支撑环1/6弧段316H不锈钢锻件,突破了超大规格快堆支撑环锻件制造技术瓶颈。结果表明:锻件各部位晶粒度、拉伸性能均匀一致且无各向异性,疲劳性能完全满足ASME设计曲线标准要求。所采用的近净成形制造工艺大大缩短了产品制造周期,提高了经济效益,实现了同类产品的国产化制造。Using electroslag remelting steel ingots,high-quality billets were prepared by hot extrusion after forging,and then formed by swage forging in a dedicated mold.The first domestic 316H stainless steel forging with an outer diameter of 15.5 meters and a weight of 15 tons for the 1/6 arc section of the fast reactor support ring has been developed,breaking through the technical bottleneck of manufacturing ultra large scale fast reactor support ring forgings.The results show that the grain size and tensile performance of each part of the forgings are uniform and consistent without anisotropy,and the fatigue performance fully meets the requirements of ASME design curve standards.The near net shape forming manufacturing process adopted greatly shortens the product manufacturing cycle,improves economic benefits,and realizes the localization of similar products.

关 键 词：316H不锈钢锻件 晶粒度 拉伸性能 疲劳性能 

分 类 号：TG142.7[一般工业技术—材料科学与工程]