Hot Plasticity of 610L Continuous Cast Slab for Automobile Beam
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摘要: 利用Gleeble-3500热模拟机,针对汽车大梁板610L连铸坯,进行了高温热塑性试验。同时利用扫描电镜分析试样的断口性质及显微组织与塑性的关系。试验结果表明:在1 300~600℃区间存在两个脆性温度区,其中第Ⅲ脆性温度区为910~705℃。研究了第Ⅲ脆性区的脆化原因。为该钢种连铸和热轧工艺制度的制定提供了依据。Abstract: The high-temperature thermoplasticity experiment of 610L continuous cast slab for automobile beam is performed at Gleeble-3500 thermal simulator.The fracture appearance and microstructure is examined with SEM.Results indicate that there are two brittle zones at temperature range of 1 300~600℃ in which brittle zone Ⅲ is at about 910~705℃.The main causes for the low ductility in brittle zone Ⅲ are studied.The experiment provides a basis for the development of continuous casting and hot rolling process system of that steel type.
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