Effect of Cooling Rate on the Transformation of the Weld Metal of 10CrNi5MoV Steel
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摘要: 采用Gleeble-3500热模拟试验机测量了10CrNi5MoV钢焊缝金属在不同冷却速率下奥氏体连续冷却过程中的温度-膨胀曲线,利用杠杆定律,得到了不同冷却速率下相变动力学曲线,分析了冷却速率对焊缝金属相变的影响。结果表明,不同冷却速率下焊缝金属的奥氏体转变动力学曲线均呈S型,冷却速率为60 ℃/s、30 ℃/s、15 ℃/s时,奥氏体转变速率与温度的曲线呈单峰状,冷却速率为6 ℃/s,奥氏体转变速率与温度的曲线表现为贝氏体、粒状贝氏体相变的双峰转变。
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关键词:
- 冷却速率 /
- 10CrNi5MoV钢 /
- 相变动力学
Abstract: The temperature-expansion diagrams of austenite continuous cooling were measured for the weld metal of 10CrNi5MoV steel at different cooling rate with Gleeble-3 500 simulator.Through expansion volume of different temperature the diagrams of austenite transformation kinetics were gained.Effect of cooling rete on austenite transformation were studied.The results show that the curves austenite transformation kinetics of the weld metal were “S” type at different cooling rate. The curves of transformation rate of austenite vs temperature showed a single peak at the cooling rate of 60 ℃/s、30 ℃/s or 15, the curves of transformation rate of austenite vs temperature bainite and granular bainite transformation twin peak at the cooling rate of 6 ℃/s.-
Keywords:
- cooling rate /
- 10CrNi5MoV steel /
- transformation kinetics
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