The improvement and optimization of post-weld treatments in the case of austenitic 316L stainless steels are, to a large extent, a condition of the service life of the associated structures. In this regard, mechanical brushing and heat treatment are post-weld techniques dedicated to the assembly of mechanically welded structures applicable in the aeronautics, food, and transport sectors. In this study, two techniques are applied to welded joints: mechanical brushing and heat treatment at high temperature. The base material is austenitic stainless steel with molybdenum (AISI316L) in sheet of 5-mm thick. The adopted welding process is Arc Welding under Metal Inert Gas (MIG). Monotonic Tensile test, micro-hardness measurement, low cycle fatigue, micro-hardness measurement, and MES (scanning electron microscopy) observation were conducted in order to qualify the welded, brushed, and heat-treated weldment. Compared with the welded and brushed samples, the treatment with heat annealing specimen maintains the longest lifetime and the lowest consolidation stress ± 0.4% imposed strain rate and 10⁻³/s as displacement speed. The annealing heat treatment has a softening effect on the welded structure during the test of the cycle fatigue; this is consistent with the micro-hardness levels measured in the weldment.

对于奥氏体316L不锈钢而言，焊后处理的改进和优化在很大程度上是相关结构使用寿命的条件。在这方面，机械刷涂和热处理是专用于组装适用于航空，食品和运输领域的机械焊接结构的焊后技术。在这项研究中，将两种技术应用于焊接接头：机械刷涂和高温热处理。基材是奥氏体不锈钢，钼（AISI316L）的厚度为5毫米。所采用的焊接工艺是金属惰性气体（MIG）下的电弧焊。单调拉伸试验，显微硬度测量，低周疲劳，显微硬度测量，进行MES和MES（扫描电子显微镜）观察，以鉴定焊接，拉丝和热处理的焊件。与焊接和拉丝样品相比，热退火样品处理可保持最长的使用寿命和最低的固结应力±0.4％的施加应变率和10位移速度为^-3 / s。在循环疲劳试验中，退火热处理对焊接结构产生软化作用。这与焊件中测得的显微硬度水平一致。