摘要
研究了热处理工艺对喷射沉积原位反应TiC_p/ZA35合金复合材料组织和阻尼性能的影响。结果表明:TiC_p/ZA35合金复合材料晶粒细小,Ti C颗粒呈均匀近球形,多沿晶界分布,未发现聚集。Ti C颗粒和ZA35合金基体界面处的位错密度较高。TiC_p/ZA35合金复合材料的内耗随测试温度上升而增加,随测试频率增加而减小。在测试频率为1 Hz,温度为160℃,内耗达到0.105。经350℃×4 h+150℃×6 h热处理后,阻尼较未热处理增加16.2%。热处理后材料阻尼增加归因于位错内耗和增强相Ti C/ZA35合金基体界面内耗。
Effect of heat treatment on microstructure and damping property of TiCp/ZA35 alloy composites fabricated by spray deposition in situ reaction was investigated. The results show that the TiCp/ZA35 alloy composites own fine grains and nearly spherical TiC particles distributed uniformly along the grain boundaries without obvious aggregation. The dislocation density is higher at the interface between TiC particles and ZA35 alloy matrix. The internal friction of TiCJZA35 alloy composites increases with the temperature rises, and decreases with the rise of test frequency, and goes up to 0. 105 at 160℃ and 1 Hz. The damping of TiCp/ZA35 alloy composites after 350 ℃ ×4 h ＋ 150 ℃-6 h heat treatment is 16.2% higher than that without heat treatment, which is attributable to the dislocation internal friction and the interface internal friction between reinforcement TiC and ZA35 alloy matrix.
出处
《金属热处理》
CAS
CSCD
北大核心
2017年第12期177-181,共5页
Heat Treatment of Metals
基金
辽宁省自然科学基金(201602356)
