摘要
采用OM、SEM、XRD等研究退火工艺对热轧态QAl10.9-5-5合金微观组织结构及力学性能的影响。结果表明,热轧态QAl10.9-5-5合金在退火空冷后的显微组织为α相、共析体(α+γ2)及少量的κ相。随退火温度升高,α相含量先增加后减小,共析体含量先减小后增加,合金硬度呈现先减小后增大趋势。随炉冷却的合金显微组织为α基体相及大量弥散分布的κ相。合金退火炉冷的硬度低于退火空冷的硬度。热轧态QAl10.9-5-5合金最佳退火工艺为750℃,2 h,冷却方式为随炉冷却。
The effects of annealing process on the microstructure and properties of QAl10. 9-5-5alloy are investigated by OM,SEM,XRD and hardness test. The results show that the components of the microstructure of QAl10. 9-5-5 alloy after annealing of air cooling are α-phase,（ α ＋ γ2） eutectoid and a few κ-phase. With the increase of annealing temperature,the content of α-phase is firstly increased and then decreased,and the content of（ α ＋ γ2） eutectoid is in the opposite direction,the hardness of the alloy is also firstly decreased and then increased. A large number of κ-phase is uniformly distributed among the base of the soft α-phase after furnace cooling. The hardness of QAl10. 9-5-5 alloy under furnace cooling is lower than that under air cooling. The optimal annealing process of hot-rolled QAl10. 9-5-5 alloy is 750 ℃,2 h with furnace cooling.
出处
《有色金属工程》
CSCD
北大核心
2016年第2期27-30,共4页
Nonferrous Metals Engineering
基金
国家自然科学基金资助(51161008)
关键词
高铝青铜合金
退火
组织及性能
Al-Fe-Ni bronze
annealing
microstructure and properties
