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新型Ａｌ－１５Ｓｎ－４Ｓｉ轴承合金经冷轧变形后分别在４７３、５２３、５７３、６２３Ｋ温度下保温１．５ｈ～４．５ｈ进行热处理。结果表明，冷轧变形后，合金中的β（Ｓｎ）相沿轧向延伸形成带状组织，硬质的Ｓｉ粒子几乎不变形；在４７３Ｋ温度下热处理，带状的β（Ｓｎ）相稍微变短，合金的硬度略微减小，变形组织仅呈现回复行为；在５２３Ｋ或以上温度热处理时，带状的β（Ｓｎ）相以Ｓｉ粒子为核心聚集球化形成软相包围硬相的“岛状”组织，合金的硬度显著减小，变形组织呈现再结晶行为。
New Al-15Sn-4Si bearing alloy after cold rolling deformation, respectively, at 473,523,573,623 K temperature insulation 1.5h ~ 4.5h heat treatment. The results show that the β (Sn) phase in the alloy extends along the rolling direction to form banded structure, and the hard Si particles hardly deform after the cold rolling deformation. At the temperature of 473K, the banded β (Sn) phase slightly shortens , The hardness of the alloy slightly decreases and the deformed structure only shows the recovery behavior. When the temperature is 523K or above, the ribbon-shaped β (Sn) phase is agglomerated with Si particles to form a soft " The hardness of the microstructure and the alloy is significantly reduced, and the deformed structure shows the recrystallization behavior.