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PCrNi3MoVA钢动态再结晶晶粒尺寸的影响因素 总被引:1,自引:0,他引:1
此文利用Formastor-Press热模拟试验机研究了Z参数,奥氏体起始晶粒尺寸D0和应变ε对PCrNi30MoVA钢动态再结晶晶粒尺寸Ddym的影响。 相似文献
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The uniform experiment design is an effective way of optimizing technology scheme for refining the grain size during multistage deformation. In this paper, it is adopted to evaluate the effect of each technology parameter on final grain size of AISI H13 hot-work tool steel during multistage deformation. It has been verified that the technology scheme for refining the final grain size can be determined rapidly and efficiently with the aid of the uniform design. The results show that the deformation parameters and the intermission time after deformation of the first stage affect the final grain size remarkably. For AISI H13 hot-work tool steel, the final grain size can be refined notably when deformation parameters for the first stage are set as follows: a deformation temperature range of 1 025-1 085 ℃; a true strain of above 0.26 and the interpass time between the first and the second stage of deformation less than 10 s. 相似文献
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工艺参数对热轧双相钢马氏体体积分数的影响 总被引:2,自引:2,他引:0
在正交实验的基础上,采用方差分析方法研究了4个工艺参数(终轧温度、终轧变形量、淬火温度、轧后缓冷时间)对单张热轧双相钢马氏体体积分数的影响。此外,还讨论了马氏体体积分数与双相钢力学性能的关系。 相似文献
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在考虑高速热模锻凹模的材料性能和工况条件基础上,由Coffin-Mansion公式导出了热疲劳裂纹萌生期预测公式,并采用这一公式对高速热模锻凹模进行了热疲劳裂纹萌生期的预测。通过试验发现预测结果与试验结果基本吻合。 相似文献
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采用Formator-Press热模拟试验机研究了35CrNi3MoV钢的热变形行为。变形条件为:温度1133-1453K,变形速率0.015-0.05S^-1,应变0.08-0.5。此外,本文还获得了该钢的变形激活能。 相似文献
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