聚变实验堆真空室壳体成型残余应力分析

为了了解聚变实验堆真空室壳体表面残余应力的分布以及退火工艺对残余应力的影响，通过模拟分析和实验检测两种方式对不锈钢316LN冷压曲面和热压曲面残余应力进行研究，获得退火前后曲面表面残余应力的大小，得到冷压曲面和热压曲面残余应力的分布以及退火工艺对残余应力分布的影响。研究结果为分析成型工艺提供数据支撑，对中国聚变工程实验堆真空室的研究与制造具有重要意义。

Residual stress analysis of fusion reactor vacuum vessel shells

In order to study the distribution of residual stress on cold pressing surface and hot pressing surface and the effect of annealing on the distribution of residual stress of the vacuum vessel shells’ surface of CFETR, the residual stress on 316LN cold pressing surface and 316LN hot pressing surface is studied with simulation analysis and experimental testing. The residual stress distributions of cold pressing surface and hot pressing surface and the effect of annealing on the distribution of residual stress are obtained. The result will provide data support for moulding process, and is important to study the forming of the vacuum vessel of CFETR.