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周野飞, 韩超, 刘利刚, 杨育林, 杨庆祥. 马氏体相变对堆焊冷却切向应力影响的数值模拟[J]. 焊接学报, 2012, (2): 73-76.
引用本文: 周野飞, 韩超, 刘利刚, 杨育林, 杨庆祥. 马氏体相变对堆焊冷却切向应力影响的数值模拟[J]. 焊接学报, 2012, (2): 73-76.
shu
ZHOU Yefei, HAN Chao, LIU Ligang, YANG Yulin, YANG Qingxiang. Simulation of tangential process of stress field after hard-face-welding during martensite transformation[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2012, (2): 73-76.
Citation: ZHOU Yefei, HAN Chao, LIU Ligang, YANG Yulin, YANG Qingxiang. Simulation of tangential process of stress field after hard-face-welding during martensite transformation[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2012, (2): 73-76.
shu

马氏体相变对堆焊冷却切向应力影响的数值模拟

Simulation of tangential process of stress field after hard-face-welding during martensite transformation

    摘要
  • 摘要: 采用红外热像仪和X射线应力仪分别测定了热轧辊钢堆焊过程的温度场和残余应力场,根据试验数据和材料的物理、力学参数,采用二维有限元计算方法,建立了堆焊应力场模型,对切向残余应力进行了数值模拟,模拟结果与测量结果相吻合,证明所建立的模型有效性.根据这一模型,对热轧辊钢堆焊冷却过程发生马氏体相变前后切向应力进行了数值模拟.模拟结果表明,在堆焊冷却过程中,当发生马氏体相变时,试样表面出现切向压应力,随着冷却时间的延长,马氏体数量增多,试样表面开始出现较大的切向拉应力,并保持到室温.

     

    Abstract: The temperature field and tangential residual stress field of hot roll steel during following cooling process after hardfacing were measured by thermo-vision analyzer and X-ray stress analyzer separately.By using the experimental data and the thermo-physical anckene,mechanical parameter of materials,the stress field of finite element model(FEM) was established.According to this model,the tangential stress of hot roll steel during cooling process after hardfacing was analyzed in this paper.The simulation results showed that the tangential compressive stress could appear on the surface of the specimen during following cooling process when martensitic transformation occured,while the large tangential tensile stress would appear on the surface of the specimen and and maintaining to the room temperature.

     

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