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张建军, 李午申, 邸新杰, 武强. 07MnNiCrMoVDR钢焊接热影响区性能预测和工艺参数的优化[J]. 焊接学报, 2008, (3): 29-32.
引用本文: 张建军, 李午申, 邸新杰, 武强. 07MnNiCrMoVDR钢焊接热影响区性能预测和工艺参数的优化[J]. 焊接学报, 2008, (3): 29-32.
ZHANG Jianjun, LI Wushen, DI Xinjie, WU Qiang. Prediction of performance of heat affected zone and optimization on welding parameters of 07MnNiCrMoVDR steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2008, (3): 29-32.
Citation: ZHANG Jianjun, LI Wushen, DI Xinjie, WU Qiang. Prediction of performance of heat affected zone and optimization on welding parameters of 07MnNiCrMoVDR steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2008, (3): 29-32.

07MnNiCrMoVDR钢焊接热影响区性能预测和工艺参数的优化

Prediction of performance of heat affected zone and optimization on welding parameters of 07MnNiCrMoVDR steel

  • 摘要: 采用热模拟技术对07MnNiCrMoVDR钢焊接热影响区的组织转变和低温韧性进行了研究。结果表明,粗晶区的低温韧性最差,临界区和临界粗晶区的低温韧性相对较好。在小热输入和较高的预热温度工艺下,能够得到最佳的低温冲击韧性。文中给出了热影响区如上三个局部脆化区的性能预测模型,在相当的工艺参数下对组织性能有一定的预测价值。最后以低温韧性最优解作为目标函数优化了焊接工艺,小热输入和高预热温度是焊接的最佳工艺参数。

     

    Abstract: The method of thermal simulation has been used to study the performance of the HAZ of the 07MnNiCrMoVDR steel. The microstructure and the performance are different under the different welding condition, and the coarse grain zone of HAZ is the worst region of low temperature toughness.Under the small heat input (10 KJ cm)and a higher preheating temperature (180℃)better performance can be attained.In addition, linear regression method was used to establish the forecast formula of performance, and the MATLAB was also used to optimize the welding procedure by the low temperature toughness optimal solution as the objective function.The small heat input and the high preheating temperature are the best protessing parameters.

     

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