原位观察稀土镧对低合金高强度钢焊接热影响区晶粒细化的影响
周峰, 曹羽鑫, 万响亮

In-situ Observation of Effect of La on Grain Refinement in Simulated Coarse-grain Heat-affected Zone of High Strength Low Alloy Steel
ZHOU Feng, CAO Yuxin, WAN Xiangliang
表2 实验用钢中粒子的尺寸和密度
Table 2 size of inclusions and precipitates of the investigated steels.
SamplesInclusions size/μmInclusions density/mm2Precipitates size/nmPrecipitates density/mm2
AverageStandard deviationAverageStandard deviation
#13.21.421.16521.61.2×104
#21.50.778.42819.01.5×106