摘要
用透射电镜、扫描电镜、光学显微镜和体视显微镜，观察分析了挤压铝合金用４ＣＴ５ＭｏＶ１ Ｓｉ钢模具经不同真空热处理后的显微组织和热磨损、热疲劳的表面形貌，从而优选出合理的真空热处理工艺。用工具显微镜和块规测量了真空热处理的变形量。试验结果表明，经 １０４０℃真空加热， ０．１３３～８００００Ｐａ气压下真空油淬，６００℃＋５８０℃两次电炉国火的４Ｃｒ５ＭｏＶ１Ｓｉ钢模具，具有良好的综合性能，均匀致密的组织，高的韧塑性能和高的热磨损抗力与热疲劳抗力，变形小，无氧化、脱碳，用于挤压铝合金模具的寿命较常规热处理后的提高２～３倍。
The 4Cr5MoV1Si Steel dies were conducted varied vacuum heat treatments. The micrscopical sturctures & the surface patterns of heat wear samples and heat fatigue samples were viewed by the stereomicroscope, ortical microscope, scanning electorn microscope and transmission electron microscope. The optimal vacuum heat treatment process was selected at 1040℃ and 0.133- 80000Pa vacuity, quenching with oil, double tempering at an 600℃ +580℃.
出处
《轻合金加工技术》
CAS
北大核心
2000年第8期27-30,共4页
Light Alloy Fabrication Technology
关键词
4CR5MOV1SI钢
真空热处理
特种性能
挤压模具
Cr5MoV1Si steel extrusion die
vacuum heat treatment
specific properties
hot wear
hot fatigue
