YU Xuejie WANG Jianlin Shanghai Iron and Steel Research Institute
,
Shanghai
,
ChinaZHOU Tianjian Anhui Institute of Technology
,
Hefei
,
China YU Xuejie
,
Senior Engineer
,
Shanghai Iron Steel Research Institute
,
1001 Taihe Road
,
Wusong
,
Shanghai
,
China.
金属学报(英文版)
In order to clarify that the IFP and the “Type 2”α phase are also arising from TiC,a metastable β-Ti alloy was selected for investigation in this work.The results showed that af- ter heating the alloy just below the α+β→β transus temperature and quenching,the TiC lay- er existed at the α/β interface.The morphology of TiC is similar to that of the IFP arising from TiH_2 in the α-β two-phase alloys.The IFP TiC also provided an easy crack path or the crack initiation sites.The fracture is also identical to that caused by IFP TiH_2.The arced diffractions(characteristic of “Type 2”α)were found in the selected area diffraction pat- terns of some specimens which had been isothermally aged after solid solution treatment.The particles which bring on the arced diffractions may be TiC on the basis of structure and lat- tice parameter analysis,not the so called “Type 2”α phase.
关键词:
interface phase(IFP)
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