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稀土耐热钢的高温性能研究

杜晓建 王龙妹 陈雷 刘晓

物理测试

加入不同含量的稀土冶炼了达到目标成分的稀土耐热钢,采用Gleeble-3800型热模拟试验机上进行了850℃~1050℃温度范围内的热拉伸试验,采用电阻炉在1100℃,1150℃,1200℃下进行了循环氧化试验。结果发现,加入适量稀土提高了耐热钢的热塑性,含稀土0.06%试验钢的断面收缩率比未加稀土的试验钢的平均提高了14.3%;加入稀土提高了耐热钢的抗高温氧化性,含稀土耐热钢在1200℃时仍具有抗氧化能力。

关键词: 稀土 , heat resistant steel , hot plasticity , oxidation resistance

EFFECT OF COPPER ON THE HOT PLASTICITY OF 304HC STAINLESS STEEL

G. Z. Cui , H. S. Di , G. D. Wang , X. H. Liu

金属学报(英文版)

The plasticity map of 304HC stainless steel was determined by using tensile and compressive test. The effect of Cu on the hot plasticity of 304HC stainless steel was analyzed. The microstructure, inclusion and fracture surface were studied by using the method of optical microscopy, SEM, EDS and EPMA. The results showed that Cu has effect on the hot plasticity and the hot plasticity of 304HC stainless steel decrease with the increase of Cu content. The deformation temperature also has much effect on the hot plasticity, the suitable deformation temperature are 1100-1200℃. The reason is that the brittle compounds are Cu2S, Cu2O and PbCl etc.

关键词: 304HC stainless steel , null , null

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