摘要
采用成分计算法和差示扫描量热法测试了4种规格11件TA24近α钛合金试样的β转变温度。成分计算法根据合金元素及杂质对相变温度的贡献率来推算钛合金的β转变温度;差示扫描量热法根据钛合金发生相变时的热量变化测得β转变温度。结果表明:在置信度均取95%的条件下,方法间的偏差为(-1.3±5.8)℃,偏差绝对值为(2.4±3.9)℃。成分计算法和差示扫描量热法的测试结果相符,其偏差介于-6.9~2.4℃,均小于HB 6623.1—1992《钛合金β段变温度测定方法差热分析法》和HB 6623.2—1992《钛合金β转变温度测定方法金相法》规定的实验室内两次平行试验的允许差(±8℃)。成分计算法可以作为一种便捷有效的TA24钛合金β转变温度的快速预测方法。
The β transformation temperatures of 11 pieces of TA24 nearαtitanium alloy samples in 4 specifications were measured by composition calculating method and differential scanning calorimetry.In the composition calculating method,theβtransformation temperature of titanium alloy was determined according to the contribution rate of alloying elements and impurity elements to the phase transformation temperature.In the differential scanning calorimetry,theβtransformation temperature was measured based on the heat change of titanium alloy during phase transition.The results showed that under the condition of 95% confidence,the deviation between methods was(-1.3±5.8)℃,and the absolute value of deviation was(2.4±3.9)℃.The measurement results of composition calculating method and differential scanning calorimetry method were consistent,and the deviation was between -6.9℃ and 2.4℃,which were both less than the allowable deviation(±8℃)of two parallel tests in the laboratory specified by HB 6623.1-1992 and HB 6623.2-1992.The composition calculating method could be used as a convenient and effective method to quickly predict the β transformation temperature of TA24 titanium alloy.
作者
李春辉
张聪毅
王硕
陈洁明
刘攀
张欣耀
LI Chunhui;ZHANG Congyi;WANG Shuo;CHEN Jieming;LIU Pan;ZHANG Xinyao(Luoyang Ship Material Research Institute,Luoyang 471023,China;National New Material Production and Application Demonstration Platform(Advanced Marine Engineering and High-tech Ship Materials),Luoyang 471023,China;State Key Laboratory for Marine Corrosion and Protection,Luoyang 471023,China;Henan Key Laboratory of Technology and Application of Structural Materials for Ship and Marine Equipment,Luoyang 471023,China)
出处
《物理测试》
CAS
2024年第1期32-36,共5页
Physics Examination and Testing
基金
国家新材料生产应用示范平台建设项目(TC180A6MR/2)。
关键词
TA24
成分计算法
差示扫描量热法
相变点
Ti75
TA24
composition calculating method
differential scanning calorimetry
phase transformation point
Ti75
