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用Gleeble-3500热模拟试验机对SA533B核电压力容器用钢进行热压缩试验,研究不同热变形条件下SA533B钢的高温变形抗力,分析了变形温度、变形速率及变形量与变形抗力之间的关系,利用回归分析确立合适的变形抗力数学模型。结果表明,变形温度对变形抗力影响较大,变形速率较低时变形抗力变化较大,变形量对变形抗力的影响主要在变形初期。变形抗力数学模型为:σ=4311.322584×ε0.098ε0.0874exp(-0.0034T+0.2813ε)。
The hot compression test of SA533B nuclear pressure vessel steel was carried out with Gleeble-3500 thermal simulation machine to study the high temperature deformation resistance of SA533B steel under different thermal deformation conditions. The relationship between deformation temperature, deformation rate, deformation and deformation resistance was analyzed , Using regression analysis to establish the appropriate mathematical model of deformation resistance. The results show that the deformation temperature has a great influence on the deformation resistance, the deformation resistance changes greatly when the deformation rate is low, and the deformation deformation affects the deformation resistance mainly in the early stage of deformation. The mathematical model of deformation resistance is: σ = 4311.322584 × ε0.098ε0.0874exp (-0.0034T + 0.2813ε).