GCr15钢的高温力学性能研究.pdf

Hot 2013，V01．42，No．14 WorkingTechnology GCrl5钢的高温力学性能研究 刘星海1，武凤娟2武会宾2’任学平1 (1．北京科技大学材料科学与工程学院，北京100083；2．北京科技大学冶金工程研究院，北京100083) GCrl5模具钢连铸坯的力学性能；分析了抗拉强度和断面收缩率随温度的变化情况；利用SEM观察试样的断口形貌。 化剂的GCrl5钢，其伸长率达324．5％。 关键词：GCrl5；高温力学性能；断口形貌；伸长率 中图分类号：TGll3．25 文献标识码：A 文章编号：1001．3814(2013)14．0060．04 on Mechanical ofGCrl5Steel StudyHigh—temperatureProperties LIU Xinghail，WUFengjuan2，WUHuibin2，I也NXuepin91 ofMaterialScienceand ofScienceand 100083，China； (1．School Engineering，UniversityTechnologyBeijing，Beijing Research ofScienceand 2．EngineeringInstitute，UniversityTechnologyBeijing，Beijing100083，China) Abstract：ThehottensiletestofGCrl5steelwasconductedthermalsimulatorGleeble-1500．The by high-temperature ofarea mechanicaloftheslabwasstudiedatdifferent oftensile andreduction temperatures．The strength properties change with was fracture ofthe WasobservedSEM．Theresultsshow temperatureanalyzed．Themorphologyspecimen by that，the brittlenessis thethird areaof is800-1200。C．Thefirst areaof good 1200-1350。C，and temperature plasticity temperature areaofbrittlenessisbelow800。C．Thezero is thezero is temperature plastictemperature1300。C，and strengthtemperature above1400。C．Theanti-oxidantsCan the ofGCrl5steel．The ofthe afterdouble-fined improveelongation