OALib Journal期刊
描述钢淬透性的一个新数学模型
, PP. 265-272
Keywords: 淬透性 ,数学模型 ,端淬曲线
Abstract:
本文提出了新的淬透性数学模型及钢的淬透性表征参数。根据端淬试验数据和试验曲线导数变化规律，用线性试探法建立了端淬曲线微分方程，然后解得硬度分布函数。硬度分布函数将端淬曲线描述为直线段和曲线段构成的分段函数。直线段描述试样端部获得全部马氏体区域的硬度，在此区域硬度保持恒定最高值。在曲线段硬度递减，最后趋近恒定最低值。钢的淬透性值用数学参数来表示,它数值上等于曲线拐点总距离，其中包括全部获得马氏体的直线段长度，但它与端淬距离无关。用非线性模拟程序代入试验值获得了淬透性值。模拟结果表明，所获得模型与试验值吻合非常好。
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