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采用凸轮式高速形变试验机,压缩端面上带凹槽并在凹槽里充满不同软化温度的玻璃粉作润滑剂的圆柱形试件的方法,其变形温度为850—1150℃,变形速度为5—80S~(-1),变形程度为L_n(h_0/h_1)=0—0.6931。对40MnB等四个合金结构钢进行高温高速下塑性变形阻力实验研究。 本文不仅提供了40MnB变形阻力计算图表,而且对目前常用变形温度对变形阻力的影响项具有两种不同结构型式的拟合曲线采用非线性回归进行分析比较,提出了拟合精度较高的变形阻力数学模型。
The use of a cam-type high-speed deformation testing machine, compression end face grooved and filled in the groove with different softening temperature of glass powder as a lubricant cylindrical specimen method, the deformation temperature of 850-1150 ℃, the deformation rate of 5 -80S ~ (-1), the degree of deformation is L_n (h_0 / h_1) = 0-0.6931. Experimental study on plastic deformation resistance of four alloy steels, such as 40MnB, under high temperature and high speed. In this paper, not only the 40MnB deformation resistance calculation chart, but also the effect of the commonly used deformation temperature on the deformation resistance item has two different types of fitting curve using non-linear regression analysis and comparison, proposed a higher fitting accuracy deformation resistance mathematical model.