TC11钛合金锻棒低倍白亮块缺陷分析与探讨  

Analysis of White Bright Band during Macro-examination of Forged Bar from TC11 Titanium Alloy

作　　者：王晓波[1] 

机构地区：[1]攀钢集团江油长城特殊钢有限公司,四川江油621701

出　　处：《特钢技术》2015年第1期17-20,共4页Special Steel Technology

摘　　要：针对TC11锻棒中的低倍白亮块缺陷,采用金相显微镜和扫描电镜进行了微观形貌分析,并采用能谱仪对白亮块及基体进行了成分分析,得出如下结论:TC11锻棒中的低倍白亮块缺陷是由于Al、Mo、Zr、Si合金元素的偏析所致,而偏析产生的原因为混料不均匀;白亮块缺陷处的材料室温拉伸性能指标远低于正常部位的指标。Aimed at eliminating the defect of white bright band in forged bars from TC 11 titanium alloy, the morphology of the band was observed and analyzed with the help of metallographic microscope and scanning electron scope. Furthermore, the compositions of the white bright band and matrix were analyzed with energy spectrometer. The results showed that the white bright band during macro-examination was caused by the segregation of elements Al, Mo, Zr and Si, and the segregation was resulted from the non-uniformly mixed raw materials; the room temperature tensile property of the sample taken from the white bright band found was worse than that of the sample from the normal section.

关 键 词：TC11合金 白亮块 金相 成分 偏析 

分 类 号：TG146.23[一般工业技术—材料科学与工程]