低合金钢焊缝金属韧化研究——焊缝显微组织对低温韧性的影响

A STUDY ON THE TOUGHNESS OF LOW ALLOY STEEL WELD METAL——EFFECT OF MICROSTRUCTURE ON TOUGHNESS

摘要: 本文通过Ti-B微合金化,探讨了低台金钢焊缝金属低温韧性与微观组织、断裂机理之间的关系。配合金相显微镜、扫描电镜及透射电镜的分析,揭示了提高焊缝低温韧性的本质。

Abstract: By making use of the Ti-B microalloying of weld metal,the relation between toughness and microstructure was studied.The mechanism of improvement in toughness was investigated by means of optical microscope,scanning electron microscope and transmission electron microscope.