热模拟试验机Thermecmastor-Z拉伸试验的拓展应用

对热模拟试验机Thermecmastor-Z进行拉伸试验夹持装置的重新设计,考察Gleeble三种拉伸试样在该设备上应用的可行性。结果表明,可以在Thermecmastor-Z上应用Gleeble拉伸试样,在两类设备上的拉伸试验获得趋势相一致的结果,反映了材料的高温塑性,Thermecmastor-Z由于具有更大的加热区间,在相同的试验条件下有更好的断面收缩率和延伸率。

Extended application of the tension test in thermal simulator Thermecmastor-Z

With the redesigned jigs for the Thermecmastor-Z thermal simulator,the feasibility of using 3 kinds of Gleeble specimens in the Thermecmastor-Z simulator was investigated. Results show that Gleeble specimens can be used in the Thermecmastor-Z simulator. The tension tests in the Gleeble and Thermecmastor-Z simulators produced results with the same trend,which proves that the high temperature ductility of Gleeble specimens can be reflected by the Thermecmastor- Z simulator. In addition,as the Thermecmastor-Z simulator offers a wider heating zone,better cross-section shrinkage and elongation of specimens can be achieved under the same test conditions.

37Mn5钢临界应变数学模型研究

采用THERMECMASTOR-Z热模拟试验机,对37Mn5钢进行热模拟实验,研究材料的变形温度、变形程度和变形速率各因素对峰值应变的影响,确定37Mn5钢的临界应变数学模型,用计算机对该模型进行回归分析,得到的结果拟合度较高。

热模拟压缩试样两端鼓肚现象的研究改善

针对热模拟试验机Thermecmastor-Z上进行压缩试验产生的两端鼓肚的特殊现象,本研究采用试样端部温度补偿的方式改善试样在压缩过程中的温度均匀性,再辅以相应的润滑介质可以极大的改善两端鼓肚现象、获得更精确的试验结果。