10.9级紧固件用非调质钢试制  

Experimental Production of Non-Quenched and Tempered Steel for Grade 10.9 Fasteners

作　　者：曹杰[1,2] 阎军[2] 孙维[3] 刘雅政[1] 章静[2] 于同仁[3] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]安徽工业大学材料科学与工程学院,安徽马鞍山243002 [3]马鞍山钢铁股份有限公司技术中心,安徽马鞍山243000

出　　处：《钢铁》2012年第1期65-68,共4页Iron and Steel

基　　金：国家科技支撑计划资助项目(2007DAE30B04)

摘　　要：为开发高强度紧固件用非调质钢,在高速线材轧机上进行了试验轧制,并对试制产品的组织性能进行了检测。结果表明,在给定工艺条件下钢的组织基本上为粒状贝氏体组织,抗拉强度为897.5MPa,伸长率为21.8%。热轧材拉拔减面后达到或超过10.9级紧固件的力学性能要求。当拉拔量为25.0%时,可承受59.3%的压缩变形不开裂。In order to develop a non-quenched and tempered steel for high strength fasteners, experimental production was carried out on a high-speed wire rod mill. The microstrueture and properties of the rolling products was tested. The microstrueture of the steel is basically granular bainite under the given technology, the tensile strength and elongation ratio of the steel are respectively 897.5 MPa and 21.8%. After drawing reduction, the steel can meet or exceed the mechanical requirement of grade 10.9 fasteners. When the drawing reduction is 25.0%, the steel can bear the compression of 59.3% without cracking.

关 键 词：高强度 紧固件 非调质钢 组织 性能 研制 

分 类 号：TG335.1[金属学及工艺—金属压力加工]