Corrosion of vehicles in wet region along the coast is a very prominent problem.
在沿海潮湿地区，汽车的腐蚀问题十分突出，但易被人们所忽视。
2
Meanwhile, the tip of precipitates along grain boundary becomes obtuse, the alloying elements are depleted in the region near the grain boundary and the stress corrosion resistance is bettered.
同时，晶界沉淀物的端部由尖锐变得圆钝，晶界临近区域中的合金元素贫化，使材料的应力腐蚀抗力提高。
3
The corrosion failure behavior of Marine steel is affected by stress, which exists in offshore structures at sea_mud region.