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研究了热处理对采用电炉+炉外精炼(LF)+电渣重熔冶炼的工业用和实验室50 kg真空感应炉+电渣重熔冶炼的试验用0Cr12Mn5Ni4Mo3Al高强度不锈钢带(0.8 mm和0.5 mm)的力学性能和组织的影响。结果表明,实验室得到的钢材更为洁净,组织中保留有合理的残余奥氏体含量;与采用同样热处理制度的工业钢带相比,在保持或提高伸长率的同时,抗拉强度提高50~85 MPa,杯突值提高1~3 mm;适当调节Cr、Ni的当量比以及采用合理的锻造、轧制工艺可以消除钢带组织中δ铁素体的不利影响,更大限度发挥材料潜力。

0Cr12Mn5Ni4Mo3Al stainless steel strips, 0.5 mm and 0.8 mm in thickness, made from ingots prepared by EAF+LF+ESR and laboratory 50 kg VIM+ESR were studied. The results show that labstrips were cleaner and had appropriate residual austenite. Compared with industrial strips, tensile strength and cupping values of labstrips were higher by 5085 MPa and 13 mm respectively with same elongation. The proper Crq/Niq ratio and forging, rolling technology could give better structure with less influence of δferrite.

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