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用金相显微镜和透射电镜对３５ＣｒＭｏ钢扩散焊接头进行了微观分析，认为；①焊缝中的条状铁索体是由母材成分不均匀所致；②焊缝中条状铁素体内大量细小碳化物的析出，提高了扩散焊接头的机械性能；③试样心部晶粒状外部晶粒粗大是由两试样表面的不平及加热速度过快造成的，提出了进一步提高３５ＣｒＭｏ钢扩散焊接头机械性能的焊接程序。
The micro-analysis of the 35CrMo steel diffusion welded joints with the metallographic microscope and the transmission electron microscope shows that: ① the strip-shaped ferrite body in the weld is caused by the uneven composition of the base metal; ② a large number of fine and small The precipitation of carbides to improve the mechanical properties of the diffusion bonding head; ③ heart of the sample grain outside the coarse grain by the uneven surface of the two samples and the heating caused by too fast, put forward to further improve the diffusion welding of 35CrMo steel Head mechanical properties of the welding procedure.