块体非晶合金的应用与连接

综述了块体非晶合金在国内外的应用现状、前景,以及目前对块体非晶合金连接的研究现状.报导了采用液相焊接方法如爆炸焊、电子束焊、激光焊等和超冷液相焊接方法如摩擦焊成功实现同质、异质块体非晶合金以及块体非晶合金与晶态合金的连接.分析了实现液相焊接块体非晶合金的关键是采用高能量密度的焊接方法以及块体非晶合金具有强的玻璃形成能力;实现超冷液相焊接块体非晶合金的关键在于块体非晶合金处于过冷液态的热稳定性、超塑性和粘滞性.

Application and joining of bulk metallic glass

This paper summarized the applications of the bulk metallic glasses and reported the latest results about joining of the bulk metallic glasses(BMGs).BMGs have been successfully welded to BMGs or crystalline metals by liquid phase welding using explosive,electron-beam,laser-beam methods,and by supercooled liquid phase welding using friction method.Successful welding of the liquid phase methods was due to the high glass-forming ability of the BMGs and the high concentration of welding energy in these methods.In contrast,the supercooled liquid phase welding was successful due to the thermally stability supercooled liquid state of the BMGs and the superplasticity and viscousness flow of the supercooled liquid.