AZ80合金的挤压成形与性能研究  

Study on Extrusion Forming and Properties of AZ80 Alloy

作　　者：冯娅[1] 许开强[1] 秦莹 

机构地区：[1]湖北工业大学,湖北武汉430068 [2]武汉理工大学材料工程系,湖北武汉430070

出　　处：《铸造技术》2017年第12期2977-2979,2984,共4页Foundry Technology

摘　　要：研究挤压温度和挤压比对AZ80合金组织、力学性能和拉伸断口的影响。结果表明,在相同挤压比条件下,AZ80合金的晶粒尺寸随着挤压温度的升高而增加;370℃和410℃挤压态试样的抗拉强度均高于铸态和均匀化态,且断后伸长率也明显提高。综合晶粒组织、拉伸力学性能和断口形貌表明,AZ80合金最佳挤压成形温度为410℃。在挤压温度相同时,提高挤压比可以提高合金的抗拉强度,但是断后伸长率有所降低。The effects of extrusion temperature and extrusion ratio on microstructure, mechanical properties and tensile fracture morphology of AZ80 alloy were studied. The results show that under the same conditions of extrusion ratio, the grain size of the alloy will increase with increasing extrusion temperature. The tensile strength of 370 ℃ and 410 ℃extruded samples are higher than the as-cast and homogenized samples, and the elongation is significantly higher.According to the results of grain structure, tensile properties and fracture morphology, the suitable extrusion temperature is410 ℃. In certain extrusion temperature, the tensile strength of samples will improve when the extrusion ratio increasing,but the elongation will decrease.

关 键 词：挤压温度 挤压比 AZ80合金 成形 

分 类 号：TG146.22[一般工业技术—材料科学与工程] TG379[金属学及工艺—金属材料]