等温时效参数对Q235/304L接触热膨胀曲线和组织的影响  

Effects of Isothermal Aging Parameters on Thermal Expansion Curves and Microstructure of Q235/304L Contact

作　　者：张俊艳 段宝玉 范秀风 ZHANG Junyan;DUAN Baoyu;FAN Xiufeng(Analytical and Testing Center,Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学分析测试中心,内蒙古包头014010

出　　处：《热加工工艺》2023年第24期107-110,共4页Hot Working Technology

基　　金：内蒙古自治区科技计划项目(201803005);内蒙古科技大学创新基金项目(2019QDL-B13)。

摘　　要：研究了不同等温时效参数对Q235/304L接触的热膨胀曲线和组织结构的影响,分析了近零压力时不同温度控制条件下的Q235/304L接触状态。采用淬火膨胀仪结合金相显微镜研究了等温时效对Q235/304L接触的热膨胀影响。结果表明,保温温度为1000℃以上时,热膨胀曲线可以体现钢种接触状态的特征。保温温度为1100℃以上,保温时间为5 h的等温时效处理有利于Q235/304L紧密接触。The effects of different isothermal aging parameters on thermal expansion curves and microstructure of Q235/304L contact were studied,and Q235/304L contact state under different temperature control conditions at near zero pressure was analyzed.Q235/304L contact state under different temperature control conditions at near zero pressure was anglyzed.Effect of isothermal aging on thermal expansion of Q235/304L contact was studied by quenching dilatometer and metallographic microscope.The results show that,when the heat preservation temperature is above 1000℃,the thermal expansion curve can reflect the characteristics of the contact state of steel species.The isothermal aging treatment with temperature of 1100℃ above and holding time of 5 h is beneficial to Q235/304L close contact.

关 键 词：等温时效 Q235/304L接触 热膨胀 组织 

分 类 号：TG161[金属学及工艺—热处理]