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该课题对国内外广泛应用的27种热作模具钢(包括工业发达国家通用的和国内近年研制成功的高性能热作模具钢)进行了系统的性能测试研究。研究了韧性指标K1c与ak间的关系、热稳定性、热磨损性、热疲劳性等性能。并对各类典型热作模具进行了宏观、微观的失效分析,搞清了失效规律和特点。在对性能系统研究和失效分析的基础上,建立了各类热作模具的失效抗力指标体系,把各类热作模具的工作特性同模具材料的测试性能建立起紧密的科学联系,这具有重要的实际应
The subject of the 27 domestic and foreign widely used hot-work die steel (including the industrialized countries and developed in recent years, domestic high-performance hot-work die steel) conducted a systematic performance test. The relationship between toughness index K1c and ak, thermal stability, thermal wear and thermal fatigue properties were studied. And all kinds of typical hot-working die carried out macroscopic and microscopic failure analysis, find out the rules and characteristics of failure. Based on the research of the performance system and the failure analysis, the failure resistance index system of all kinds of hot die is established, and it is important to establish the close scientific relationship between the working characteristics of all kinds of hot die and the test performance of die material The actual should