Abstract: Counting and Photoshop pixel method were used to measure ferrite volume percentage of ER2209 duplex stainless steel layering, the result shows that ferrite volume percentage of layering respectively is 50.1% and 56.5% by counting and Photoshop pixel method, the values are in between 30% and 60%, the outcome meets to phase ration requirements. Standard deviation of ferrite volume percentage φα is 2.06% by Photoshop pixel method, but that is 4.89% by counting, compared with two methods, Photoshop pixel method is better to measure ferrite volume percentage of duplex stainless steel layering.

Key words: Ounting method , Photoshop pixel method , Duplex stainless steel ,  Ferrite volume percentage

摘要： 采用数点法和Photoshop像素法两种方法,测量ER2209双相不锈钢堆焊层中铁素体相体积分数,结
果表明,数点法和Photoshop像素法测量ER2209双相不锈钢堆焊层中铁素体相体积分数分别为50.1%和56.5%,
测量值均在30%~60%,其结果满足双相不锈钢相比例的要求。Photoshop像素法测量的铁素体相体积分数氄毩的
标准偏差S 为2.06%,而数点法测量的铁素体相体积分数氄毩的标准偏差S 为4.89%,用Photoshop像素法测量铁
素体相体积分数会更加精确。

关键词: 数点法 , Photoshop像素法 , 双相不锈钢 , 铁素体相体积分数