高压和热处理对铝青铜微观组织的影响

 借助金相、扫描电子显微镜（SEM）/能谱仪（EDS）及X射线衍射（XRD）等方法，研究了高压和热处理对铝青铜微观组织的影响。结果表明：铝青铜经750 ℃温度、6 GPa压力处理后所获得的α相的晶粒尺寸较经750 ℃温度、常压处理后所获得的α相晶粒尺寸小；当铝青铜经高压处理后再经750 ℃保温2 min常压处理时，组织中出现细条状的α相，且热处理后的冷却速度越大，细条状α相的数量越多，颗粒状α相的数量越少。

Effect of High Pressure and Heat Treatment on Microstructure of Aluminum Bronze

The effects of high pressure and heat treatment on microstructure of aluminum bronze were investigated by means of metallographic, scanning electronic microscope (SEM)/energy disersive spectrometer (EDS) and X-ray diffraction (XRD). Results showed that the grain size of α phase in the aluminum bronze after the treatment at 750 ℃ and 6 GPa high pressure is smaller than that after treatment at 750 ℃ and normal pressure. When the aluminum bronze was treated at 750 ℃ and 6 GPa and followed by a treatment at 750 ℃ for 2 min, thin stripy α phase occurred in the aluminum bronze, and its amount increased but the amount of granular α phase decreased with increase of the cooling rate.