30Cr2Ni4MoV低压转子钢中不同微观组织的比热和导热系数的测定  

Measurement of specific heat and thermal conductivity of different microstructure in 30Cr2Ni4MoV low pressure rotor steel

作　　者：王晓燕[1] 顾剑锋[1] 陈睿恺[1] 潘健生[1] 

机构地区：[1]上海交通大学材料科学与工程学院上海市激光制造与材料改性重点实验室,上海200240

出　　处：《金属热处理》2011年第4期1-3,共3页Heat Treatment of Metals

基　　金：上海市重大科技攻关项目(08DZ1100302);上海市重点科技攻关项目(09521101303)

摘　　要：采用差示扫描量热法和激光脉冲法分别测定了30Cr2Ni4MoV低压转子钢中不同微观组织(奥氏体、贝氏体和马氏体)在不同温度下的比热和热扩散系数,并进一步计算得到导热系数。结果表明,马氏体和贝氏体的比热随温度升高而增大,而奥氏体的比热随温度升高略有减小;但3种组织的导热系数均随温度升高而减小。The specific heat and the thermal diffusivity of different microstructure（austenite,bainite and martensite） in 30Cr2Ni4MoV low pressure rotor steel at different temperatures were measured by differential scanning calorimetry（DSC） and laser flash method.The thermal conductivity was calculated.The results show that the specifc heat of martensite and bainite increase with the temperature rising,while the specific heat of austenite decreases slightly with the temperature rising.However,the thermal conductivities of the three microstructure all decrease with the temperature rising.

关 键 词：30CR2NI4MOV钢 比热 导热系数 差示扫描量热法 激光脉冲法 

分 类 号：TG113.223[金属学及工艺—物理冶金]