 
 <prompt> "The solid solution dey separate, which material dey allow am further? Based on di last question, write one context wey contain di answer." <response>: ```On the other hand, most heat-treatable alloys na precipitation hardening alloys, wey dey produce di opposite effects wey steel dey produce. When dem heat am to form solution and then cool am sharp sharp, these alloys go become much softer pass normal, during di diffusionless transformation, and then go harden as dem dey age. Di solutes for these alloys go precipitate over time, dey form intermetallic phases, wey dey hard to see from di base metal. Unlike steel, wey di solid solution dey separate to form different crystal phases, precipitation hardening alloys dey separate to form different phases inside di same crystal. These intermetallic alloys dey look like say dem get one crystal structure, but dem dey behave like say dem get different structure, dey hard and small small brittle.``` 