预硬型塑料模具钢P20和718等温转变曲线的测定与分析  

Measurement and Analysis of TTT Diagrams of Pre-hardened Plastic Die Steels P20 and 718

作　　者：宋冬利[1] 顾剑锋[1] 胡明娟[1] 

机构地区：[1]上海交通大学高温材料及高温测试教育部重点试验室,上海200030

出　　处：《金属热处理》2003年第12期27-29,共3页Heat Treatment of Metals

摘　　要：针对厂方设计并生产的P2 0和 718钢 ,利用膨胀法测定了它们的等温奥氏体转变曲线 (TTT曲线 ) ,并对曲线进行了分析和讨论 ,为制订合理的预硬化工艺建立了依据。The TTT diagrams of the pre-hardened plastic die steels P20 and 718 from a steel plant were measured by dilatometer method.The character of the measured TTT diagrams was analyzed and discussed,which is a necessary basis for designing a proper pre-hardening process of these steels.

关 键 词：预硬型塑料模具钢 等温奥氏体转变曲线 膨胀法 

分 类 号：TG142.45[一般工业技术—材料科学与工程] TG111.5[金属学及工艺—金属材料]