The crack morphology of hardfacing metal was investigated by means of optical and scanning electron microscopy.The effect of RE oxide on cracking resistance of hardfacing metal was studied.

• 采用金相和电镜等手段对堆焊裂纹形貌进行了观察，并研究了稀土氧化物对堆焊金属抗开裂性能及塑、韧性的影响。