铜对低合金钢高温热塑性的影响  

Effect of Cu on High Temperature Thermoplasticity of Low-Alloy Steel

作　　者：姜英花 刘柏松 JIANG Yinghua;LIU Baisong(Research Institute of Technology,Shougang Group Co.,Ltd.,Beijing 100043,China;Beijing Key Laboratory of Green Recyclable Process for Iron&Steel Production Technology,Beijing 100043,China)

机构地区：[1]首钢集团有限公司技术研究院,北京100043 [2]绿色可循环钢铁流程北京市重点实验室,北京100043

出　　处：《上海金属》2025年第2期46-49,共4页Shanghai Metals

摘　　要：采用Gleeble-3800热模拟试验机研究了铜对低合金钢高温热塑性的影响。结果表明:添加0.2%Cu(质量分数)使低合金钢的高温热塑性降低;不含铜的低合金钢的脆性温度区间为763~733℃,含铜低合金钢为782~715℃,热塑性低谷的温度区间扩大了37℃;与不含铜的低合金钢相比,含铜低合金钢的铁素体膜较薄,细小的碳氮化物较多。膜状铁素体和碳氮化物析出使含铜低合金钢的高温热塑性降低。Effect of copper on the high temperature thermoplasticity of low-alloy steel was studied by Gleeble-3800 thermal simulation testing machine.The results showed that(a)the addition of 0.2%Cu by mass to low-alloy steel reduced its high temperature thermoplasticity;(b)the brittle temperature range of copper-free low-alloy steel was 763 to 733℃,while that of copper-containing low-alloy steel was 782 to 715℃,the temperature range in which the steel exhibited minimum thermoplasticity widened by 37℃;(c)compared with the copper-free low-alloy steel,the copper-containing low-alloy steel had thinner ferrite films and more finer carbonitrides.The precipitations of film-like ferrite and carbonitrides reduced the high temperature thermoplasticity of copper-containing low-alloy steel.

关 键 词：铜 低合金钢 热塑性 膜状铁素体 析出物 

分 类 号：TG142.1[一般工业技术—材料科学与工程]