【摘要】 采用机械搅拌法获得Zn-Al合金半固态浆料,随后直接将其压入模腔实现半固态挤压成型.研究了半固态等温温度、搅拌速率和挤压力对成型件质量的影响.结果表明,半固态等温温度控制在415～420℃间、搅拌速率1000r/min和5～10MPa的挤压力的条件下,可获得初晶以等轴状为主的显微组织.更多还原

【Abstract】 The semisolid state ZnAl alloy obtained by mechanical agitation is injected into the mold and then formed under extrusion. The influence of the isothermal temperature, the stirring speed and the extrusion pressure on quality of the formed parts were investigated. It is shown that most of the primary grains would take the shape of sphere under conditions of the isothermal temperature 415-420 ℃ and the stirring speed 1000 r/min as well as the extrusion pressure 5～10 MPa.更多还原