热处理过程中钛层对钛钢爆炸复合板钢侧组织转变的影响

利用光学显微镜、扫描电子显微镜研究了不同温度下钛层对钛钢爆炸复合板钢侧组织转变的影响。结果表明:有钛层时,钢侧结合界面上会形成脱碳层。当850℃及以下温度加热时,在波头的漩涡处产生粗大的铁素体晶粒,而在950℃保温时,在波峰处产生粗大的铁素体。剥离钛层时,只在波头的漩涡处产生铁素体区,随着温度的升高,铁素体区减小。产生这种现象的主要原因是钛层的存在,碳元素向结合界面扩散形成TiC,在结合界面附近形成铁素体区。

Effect of titanium layer on microstructure at steel side of titanium explosion clad plate during heat treatment

The effect of titanium layer on microstructure at steel side of titanium explosion clad plate under different temperatures was studied by means of OM and SEM.The results show that: when the titaniam layer exists during heat treatment,the interface of steel side can form a decarburized layer.After heating at 850 ℃ and below,the interface structure of steel side which near the swirl of wave tip develops abnormally into big ferrite.After heating at 950 ℃,the interface structure of steel plate grows unusually into columnar-structure ferrite structure on titanium clad steel plate.Stripped titanium layer,the ferrite zone generates at only the swirl of wave tip,with increasing temperature,area of ferrite decreases.The main reason for this phenomenon lies in the existence of layers of titanium,carbon diffusion to the interface with the formation of TiC,and the formation of ferrite near the interface zone.