某两批次的TA10钛合金材料在轧制25 mm×1.65 mm管的过程中, 在半成品和成品的内外表面出现了不满足标准要求的裂纹和缺陷。通过对材料进行理化检验及分析得出: 镍、钼偏析使材料的物理性能不均匀, 是产生该现象的根本原因。在熔炼过程中采用中间合金TiMo和 TiNi作为配料溶入铸锭可以得到物理性能均匀、偏析程度低的TA10材料。

In rolling process of 25 mm×1.65 mm tube of titanium alloy TA10, there were some cracks and defects which did not meet the standard requirements on the inner and outer surface of semi-finished and finished tubes. Through physical testing and chemical analysis on the material, the reason of the phenomenon was due to segregation of Ni and Mo caused uneven physical properties of materials. In the melting process, TiNi and TiMo was added into ingot casting as middle alloy, TA10 ingot with uniform physical properties and small segregation was obtained.