退火对A32钢焊接接头耐蚀性能的影响
发布时间：2018-09-03 17:03
【摘要】：A32钢焊接接头广泛应用于船舶工业,其耐蚀性能的优劣对于焊接接头的力学性能和使用寿命至关重要.采用扫描电镜,超景深数码显微镜和电化学分析仪等表征手段,研究了船用A32钢焊接接头在进行去应力退火前后各部位在模拟海水溶液中的腐蚀行为,并对相关影响因素进行了讨论.结果表明:800℃去应力退火后,A32钢焊接接头部位耐蚀性能显著提高,这主要是由于在焊缝区和熔合区形成了趋向一致的树枝晶,母材组织铁素体增多,珠光体减少;另外,退火后的锈层成分为Fe_2O_3和α-FeOOH,较退火前的焊接接头锈层致密、覆盖完整,防腐蚀性能更好.
[Abstract]:A32 steel welded joints are widely used in marine industry. The corrosion resistance of A32 steel joints is very important to the mechanical properties and service life of welded joints. The corrosion behavior of marine A32 steel welded joints in simulated sea water solution before and after annealing was studied by means of scanning electron microscope (SEM), depth of field microscope and electrochemical analyzer. The related factors are discussed. The results show that the corrosion resistance of welded joints of W800 鈩，
本文编号：2220620
[Abstract]:A32 steel welded joints are widely used in marine industry. The corrosion resistance of A32 steel joints is very important to the mechanical properties and service life of welded joints. The corrosion behavior of marine A32 steel welded joints in simulated sea water solution before and after annealing was studied by means of scanning electron microscope (SEM), depth of field microscope and electrochemical analyzer. The related factors are discussed. The results show that the corrosion resistance of welded joints of W800 鈩，
本文编号：2220620
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