摘要
研究了冷轧及退火处理对轴承合金AlSn25CuMn微观组织的影响。结果表明:合金板在压下50%时,晶粒已明显被拉长;在压下75.4%时,晶粒被拉长为纤维状,Sn在沿轧制方向形成了带状组织;在压下85.4%时,组织中较大的晶粒被压碎,变为不规则的长条状。退火处理后,轧制变形的晶粒发生再结晶,变为细小的等轴晶;在300℃退火2h后,有Sn析出,出现了"锡汗"现象。
The effects of cold rolling and annealing treatment on microstructure of bearing alloy A1Sn25CuMn were studied. The results show that： the grain of alloy plate is elongated obviously under the pressure of 50%; the grain is elongated as fibrous shape under the pressure of 75.4%, Sn banded microstructure is formed along the rolling direction; the bigger grain in microstructure is crushed and changed to irregular strip under the pressure of 85.4%. After annealing treatment, rolling deformation grains produce recrystallization and change to fine equiaxed crystal; Sn is separated out, which is called the ＇tin sweat＇ phenomenon after 300℃ for 2 h annealing treatment.
出处
《热加工工艺》
CSCD
北大核心
2014年第5期41-43,共3页
Hot Working Technology
