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对工业纯钛TA2成功实现了搅拌摩擦加工(Friction stir processing,FSP),研究了FSP后搅拌区、热机影响区、热影响区组织特征,对比分析了FSP加工区与母材的摩擦磨损及电化学腐蚀性能。结果表明:TA2工业纯钛表面经FSP后,搅拌区晶粒发生了剧烈的塑性变形、混合和破碎,实现组织结构的致密化、均匀化和细化;当摩擦磨损圈数分别为1,000r、1,500r和2,000r时,摩擦磨损质量损失分别比母材减少31.4%、36.6%和46.4%,经FSP后工业纯钛抗摩擦磨损性能明显提高,但电化学腐蚀性能有小幅下降。
Friction stir processing (FSP) was successfully carried out on industrial pure titanium TA2. The characteristics of the stir zone, the heat affected zone and the heat affected zone after FSP were studied. The friction and wear of the FSP processing zone and the base metal were compared and analyzed. Chemical corrosion performance. The results show that: the surface of TA2 industrial pure titanium after FSP, the agitation zone of the grain occurred severe plastic deformation, mixing and crushing, to achieve organizational structure densification, homogenization and refinement; when the friction and wear laps were 1,000r, At 1,500r and 2,000r, the friction and wear losses were reduced by 31.4%, 36.6% and 46.4% respectively compared with the base metal. The FSP wear resistance of industrial pure titanium increased obviously, but the electrochemical corrosion performance decreased slightly.