中文摘要：

根据脉冲放电对含圆柱形非金属夹杂构件所引起的温度场,将其分解为轴对称温度场和非轴对称温度场两部分,采用热弹性位移势及叠加原理,在给定的边界条件下,分别求解两类温度场所引起的热应力场。以16Mn构件强化为例求解夹杂边界处热应力分布发现,在该区域,无论径向、周向应力均为压应力,而且远超出材料的屈服强度;在温度和应力耦合作用下,将极大影响夹杂附近的组织性能及应力状态。进一步研究沿径向路径的热应力变化发现,脉冲放电引起的热应力仅对含夹杂区域的组织性能及应力状态影响较大,而对无夹杂区域并没有太大影响,因此,该技术可应用于在线构件的强化。

英文摘要：

According to the temperature of pulse discharge in metal components with cylindrical non‐metallic inclusion ,the tem‐perature field can be decomposed into the axial symmetry temperature field and asymmetric temperature field .The stress field is solved through potential of the thermal displacement and superposition principle under the boundary condition of assignment .And taking 16Mn components as example ,it is discovered that both radial and circumferential stresses around the inclusion are com‐pressive stress which far exceeds the yield strength .Therefore under the coupling effect of temperature and stress ,the micro‐structure and properties nearby the inclusion will be affected significantly .Furthermore ,the Mises stress is more significant near‐by the inclusion than anywhere by discussing the thermal stress along the radial direction .Therefore ,this technology has less effects on the region without inclusion and can be used on online strengthening .