当前位置：首页 >
超声处理对镁合金组织及性能的影响
Effect of Ultrasonic Treatment on the Microstructure
浏览(17868) 下载(0)
- DOI:
- 作者:
- 胡宗志1，赵宇昕1，王朝辉1，许利民2，杜文博1
- 作者单位:
- 1.北京工业大学材料科学与工程学院，北京 101100；2.承德石油高等专科学校，河北 承德 067000
- 关键词:
- 镁合金；熔体；超声处理；晶粒细化
Magnesium alloy; Melting; Ultrasonic treatment; Grain refinement
- 摘要:
- 通过对镁合金AZ31进行熔体超声处理发现，处理后试样的晶粒较未进行超声处理的试样有明显细化，分布均匀程度提高，形状呈椭圆状或球状，合金元素Al在晶粒内的析出被抑制，Mg17Al12第二相的析出主要集中于晶界，硬度有明显提高，并且通过试验确定出了最佳处理功率和时间，为超声波在铸造生产中的应用提供了依据。
Compared to the sample without ultrasonic treatment, it was found that, for AZ31 magnesium melt alloy treated by ultrasonic, the refined grain size and the inproved distribution of grain with its shape of ovalshaped or spherical can be obtained, and the precipitation inside Al matrix was inhibited The Mg17Al12 precipitates distributed mainly along the grain boundary and hardness was improved remarkedly. Moreover, the optimized treatment processing on power and time were studied, which gave evidence for the casting application by ultrasonic.