Utilization of partial metallurgical injection for regulation of solidification forces in fusion welding processes (A07)

利用部分冶金注射调节熔焊过程中的凝固力 (A07)

• 批准号: 260044599
• 金额: --
• 依托单位: Institut für Schweißtechnik und Fügetechnik (ISF)
• 依托单位国家: 德国
• 项目类别: Collaborative Research Centres
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/260044599?language=en
• 关键词: Utilization; partial; metallurgical; injection; regulation

In this subproject, compressive stresses are selectively generated by partial metallurgical manipulation with Low Transformation Temperature (LTT) weld metal. This is done by local volume expansion initiated by delayed martensitic phase transformation at reduced temperature. The focus is on distortion compensation through process control of martensitic phase transformation for targeted thermal strain control in the beam welding process. For this purpose, a simulation model is developed and used to predict residual stresses.

在该子项目中，通过对低转变温度 (LTT) 焊缝金属进行部分冶金操作，选择性地产生压应力。这是通过在降低的温度下延迟马氏体相变引发的局部体积膨胀来完成的。重点是通过马氏体相变过程控制进行变形补偿，以实现梁焊接过程中的目标热应变控制。为此，开发了一个模拟模型并用于预测残余应力。