摘要
研究结果表明:由于Sn的加入,合金中形成的颗粒相Mg2Sn会使合金组织晶粒变细,晶间组织由连续网状变得不连续,并提高了合金的力学性能。当Sn加入量为1%时,合金的抗拉强度提高了30.0%,冲击韧度提高了52.4%,布氏硬度提高了37.8%,伸长率提高了51.8%。拉伸断口形貌分析表明,由于Sn的加入,合金的断裂方式由解理断裂转变为准解理断裂。
Effects of Sn on microstructure and mechanics properties of AZ31 Mg alloy have been investigated,resulting in that the Mg2Sn particle formed in AZ31 alloy with Sn addition to refine the crystal grain and make the boundary structure turn from continuous to broken reticulation and improve mechanics properties of experiment alloys.With added Sn 1% the increases were the impact toughness 52.4%,tensile strength 30.0%,Brinell hardness and elongation 37.8% and 51.8% respectively.With Sn addition,fracture morphology has transformed cleavage rupture into quasi-cleavage rupture from SEM observation.
出处
《中国铸造装备与技术》
CAS
2009年第6期13-16,共4页
China Foundry Machinery & Technology
