According to a series of linear friction welding test for TC4 alloy,the morphology,distribution of oxide in welded joint and the joint microstructure under certain condition were observed.

• 进行了TC4线性摩擦焊焊接试验,观察了一定焊接条件下,TC4钛合金线性摩擦焊接头氧化物组织的形态、组成、分布特点及组织特征。