摘要
采用中高碳成分添加低密度元素Si、Al进行轻量化的设计思路设计了试验钢的化学成分,试验钢采用50 kg真空感应炉冶炼。利用金相显微镜、SEM扫描电镜和力学性能检测设备对试制后的Φ6 mm盘条进行了显微组织观察、珠光体片层间距的测量和屈服强度、抗拉强度、延伸率的检验。结果表明:盘条在600℃等温2 h后的金相显微组织为铁素体+珠光体的混合组织,珠光体的片层间距为(126±5) nm,屈服强度大于1 183 MPa、抗拉强度大于1 425 MPa、延伸率大于10%,其力学性能满足电缆用铠装钢的技术要求。
The design idea of light-weighting with medium and high carbon components and low density elements Si and Al was adopted,and the tested high-strength armored steel was melted by a 50 kg vacuum induction.At the same time,the metallographic microstructure and pearlite lamellar spacing and mechanical property of the Φ6 mm wire rod were tested by means of metallographic microscope, SEM scanning electron microscopy and mechanical property testing equipment, The results show that the microstructure of the wire rod after isothermal heat treatment(600 ℃ insulation for 2 hours) is ferrite and pearlite mixed microstructure.The pearlite lamellar spacing is(126 ±5) nm,the yield strength is greater than 1183 MPa,the tensile strength is greater than 1 425 MPa and the elongation is greater than 10%.The mechanical properties of test steels meet the technical requirements of armoured steel for electric cables.
作者
冯路路
乔文玮
鲁修宇
Feng Lulu;Qiao Wenwei;Lu Xiuyu(School of Mechanical Engineering,Jing Chu University of Technology ,Jingmen 448000;Jiangsu Huaneng CableCo Ltd, Gaoyou 225613;School of Materials and Metallurgy, Wuhan University of Science and Technology,Wuhan 430081;Research Institute of Wuhan Iron & Steel Group,Wuhan 430080)
出处
《特殊钢》
北大核心
2019年第3期43-45,共3页
Special Steel
基金
荆门市科技计划项目资助(2018YFYB054)
关键词
铠装钢
高强度
珠光体片层间距
力学性能
Armored Steel
High Strength
Pearlite Lamellar Spacing
Mechanical Property
