X70钢的CO2腐蚀受到钢的成分、显微组织等冶金因素的影响。
CO2 corrosion behavior of X70 steel is affected by metallurgy factors such as the composition and microstructure of the steel.
通过电镜分析，发现在马氏体基体上有一定数量的弥散的第二相存在是引起积屑瘤产生的冶金因素。
By electronic microscope analysis, it is found that there is a certain amount of second dispersed phase in the martensite matrix which is the metallurgical factor of forming built-up edge.
本文着重论述了影响双全属结合层质量、裂纹形成的冶金因素及工艺因素，并指出了必须采取的有效工艺措施。
This paper mainly discusses metallurgical and technical factors influencing the quality of the binding surface and the formation of cracks, and gives effective measures that must be taken.
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