Effects of Thermo-mechanical Treatment on Properties of Al-bronze Alloy

Yang Chunxiu; Li Huaqing; Chen Zhongping; Xiang Chaojian

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Effects of Thermo-mechanical Treatment on Properties of Al-bronze Alloy
Vol. 31, Issue 11, Pages: 998-1001(2011)
Published： 2011 ，
DOI：

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[1]杨春秀,李华清,陈忠平,向朝建.铝青铜形变热处理工艺研究[J].特种铸造及有色合金,2011,31(11):998-1001.

Yang Chunxiu, Li Huaqing, Chen Zhongping, et al. Effects of Thermo-mechanical Treatment on Properties of Al-bronze Alloy. [J]. Special Casting & Nonferrous Alloys 31(11):998-1001(2011)
[1]杨春秀,李华清,陈忠平,向朝建.铝青铜形变热处理工艺研究[J].特种铸造及有色合金,2011,31(11):998-1001. DOI：

Yang Chunxiu, Li Huaqing, Chen Zhongping, et al. Effects of Thermo-mechanical Treatment on Properties of Al-bronze Alloy. [J]. Special Casting & Nonferrous Alloys 31(11):998-1001(2011) DOI：

摘要

采用气氛保护中频炉熔炼新型铝青铜合金

铸锭经热轧后立即淬火

分别进行40%、50%、60%、70%和80%的冷轧变形

然后进行中间退火（700℃×2h）和成品退火（650℃×2h、700℃×2h、750℃×2h）处理

并在两次退火中间分别进行20%、40%和60%的冷轧变形。通过金相显微镜（OM）和透射电镜（TEM）研究了形变热处理参数对铝青铜合金析出相和相变驱动力的影响。结果表明

提高退火温度、增加冷轧变形量

可以增大相变驱动力。合理的形变热处理参数:60%～80%冷变形+700℃×2h中间退火+20%～40%冷变形+（650～750℃）×2h成品退火

可使析出相细小且分布均匀

合金具有较高的综合性能。

Abstract

The Al-bronze alloy was melted in a gas protection induction furnace to prepare the ingot.The ingot was hot rolled to plate and then water quenched immediately.The plates were cold rolled with the reduction of 40%

50%

60%

70% and 80%

respectively

and then annealed at 700 ℃ for semi-finished plates as well as annealed at 650 ℃

700 ℃ and 750 ℃ for 2 hours for finished ones

respectively

meanwhile

cold deformation with reduction of 20%

40% and 60% was conducted

respectively

before finished annealing treatment.Effects of thermo-mechanical treatment on the precipitates and transformation kinetics were investigated by optical microscope（OM） and transmission electron microscope（TEM）.The results show that transformation kinetics is increased with increasing in annealing temperature and in cold deformation.With 60%

0% cold deformation and middle annealing at 700 ℃ for 2 hours and 20%

0% cold deformation +finished annealing at 650

50 ℃ for 2 hours

fine and uniformly distributed precipitates in the alloy with high comprehensive properties can be observed.