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利用SEM原位观察了不同热处理工艺下钛钢爆炸复合板的弯曲过程,利用OM和SEM分析了钛钢爆炸复合板弯曲过程中裂纹产生的原因。研究结果表明:不同热处理工艺下,钛钢复合板弯曲过程中界面上产生裂纹,并且裂纹出现的位置不同。原始状态和750℃时,在波头的漩涡处产生裂纹;850℃时,裂纹首先在波峰处产生,随后波头的漩涡处也产生裂纹;950℃时,裂纹首先在波谷处产生,随后沿复合界面扩展。热处理过程中形成的TiC和Ti-Fe金属间化合物导致了弯曲过程中裂纹的萌生和扩展。
SEM was used to observe the bending process of titanium composite plates under different heat treatment conditions. The causes of the cracks during the bending process of titanium composite plates were analyzed by OM and SEM. The results show that cracks are formed on the interface during the bending process of Ti-steel clad plates under different heat treatment processes, and the locations of the cracks are different. In the initial state and at 750 ℃, cracks were formed in the whirlpool of the wave head. At 850 ℃, the crack was first produced at the crest of the wave crest, and then the crests of the wave crest of the wave crest were also generated. At 950 ℃, the crack was first produced in the wave trough, Composite interface extension. The formation of TiC and Ti-Fe intermetallics during heat treatment led to the initiation and propagation of cracks during bending.