A modified constitutive model, combining laser shock processing and dynamic strain aging (DSA), is used to obtain the compressive residual stress field of In 718 in warm laser shock processing (WLSP) by ABAQUS VUMAT subroutine. In this work, a constitutive model with DSA is simplified by a single equation to integrate the interactions of face-centered cubic (FCC) and body-centered cubic (BCC) crystal structure. The modified Voyiadjis–Abed–Song (VAS) constitutive model is imported by a procedure code developed independently, including the Mises yield criterion application and parameter update. Based on the constitutive model and Gaussian mode laser wave, the strengthen process of WLSP in In 718 is simulated. For the experiment, 30×30×4 mm In718 specimen is strengthened by WLSP without coating. We analyze the amplitude and distribution of residual stress to explore the effect of temperature in impact regions through experiment and simulation. Predicted by the modified VAS constitutive model, the residual stress predicted by the modified VAS constitutive model agrees well with the experimental data at various temperatures. As a result, temperature softening has obvious effect on the residual stress distribution for In 718 in WLSP at 200°C. At 300°C, the residual stress amplitude has no diminution compared with 200°C due to DSA active, even there is thermal softening. DSA promotes the diffused solute atoms gathering and dislocation multiplication, that makes a flow stress reduce at a temperature range.

结合激光冲击处理和动态应变时效（DSA）的修正本构模型，通过ABAQUS VUMAT子程序获得In 718在热激光冲击处理（WLSP）中的压缩残余应力场。在这项工作中，通过单个方程式简化了具有DSA的本构模型，以整合面心立方（FCC）和体心立方（BCC）晶体结构的相互作用。修改后的Voyiadjis-Abed-Song（VAS）本构模型是通过独立开发的过程代码（包括Mises屈服准则应用和参数更新）导入的。基于本构模型和高斯模激光，模拟了In 718中WLSP的强化过程。对于实验，30 × 30 ×通过WLSP增强了4 mm In718样品，没有涂层。我们分析残余应力的幅度和分布，以通过实验和仿真来探索温度对冲击区域的影响。通过修正后的VAS本构模型预测，修正后的VAS本构模型预测的残余应力与各种温度下的实验数据吻合良好。结果，温度软化对200 ° C的WLSP中In 718的残余应力分布有明显影响。在300 ° C时，与200 °相比，残余应力幅度没有减小。C由于DSA处于活动状态，即使发生热软化也是如此。DSA促进了扩散的溶质原子聚集和位错倍增，从而使流动应力在温度范围内降低。