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X70管线钢HAZ组织与性能预测及焊接工艺优化模型
Microstructure and Performance Forecast and Welding Process Optimization Model of HAZ of X70 Pipeline Steel
【摘要】 将焊接热模拟技术和数值模拟技术结合起来,提出了焊接热影响区组织与性能预测及工艺优化模型的设想。以X70管线钢粗晶热影响区为研究对象,建立其模型,通过此模型可预测热影响区粗晶区先共析铁素体含量及显微硬度,并可根据组织和显微硬度要求确定合适的焊接线能量。
【Abstract】 Combined welding thermal simulation technique with numerial simulation technique,an idea model of microstructure and performance forecast and welding process optimization of HAZ was put forward.Taking the CGHAZ of X70 pipeline steel as studying object,a model was built.Using the model,the content of PF and the hardness of CGHAZ can be forecasted,and according to the requirement of microstructure and hardness,the welding line energy was optimized.
【关键词】 焊接热影响区;
热模拟;
数值模拟;
X70管线钢;
粗晶热影响区;
【Key words】 heat affected zone(HAZ); thermal simulation; numerical simulation; X70 pipeline steel; coarse-grain heat-affected zone(CGHAZ);
【Key words】 heat affected zone(HAZ); thermal simulation; numerical simulation; X70 pipeline steel; coarse-grain heat-affected zone(CGHAZ);
- 【文献出处】 热加工工艺 ,Hot Working Technology , 编辑部邮箱 ,2007年03期
- 【分类号】TG457
- 【被引频次】3
- 【下载频次】302