摘要
采用铜模浇铸法制备了Al63Cu27Zn10、Al56Cu24Zn20、Al49Cu21Zn30和Al42Cu18Zn40非晶合金。X射线衍射谱图表明Al56Cu24Zn20和Al49Cu21Zn30为完全金属玻璃,而Al63Cu27Zn10和Al42Cu18Zn40为部分非晶合金。得到了合金的玻璃化转变温度(Tg)、晶化温度(Tx)以及过冷液相区宽度(ΔTx=Tx-Tg),推断出Zn元素的加入降低了体系的非晶形成能力(GFA)。从得到的硬度值可知,非晶合金的显微硬度值高于相同成分的结晶合金。
Al63Cu27Zn10、Al56Cu24Zn20、Al49Cu21Zn30 and Al42Cu18Zn40 bulk metallic glasses （BMGs） have been prepared through a copper mold casting method. The XRD examinations demonstrated that Al56Cu24Zn20 and Al49 Cu21 Zn30 were fully amorphous, and Al63Cu27 Zn10 and Al42Cu18Zn40 were partially amorphous. The glass tran- sition temperature （ Tg ）, crystallization temperature （ Tx ） and supercooled liquid region （ △Tx=Tx-Tg ） were gained, from those we concluded that the addition of Zn decline the glass forming ability （GFA） of the system. The microhardness value demonstrated that the microhardness values of amorphous alloys were higher than that of crystal alloys with the same compositions.
出处
《化学工程师》
CAS
2008年第7期1-3,共3页
Chemical Engineer
基金
国家863项目(2006AA03Z510)
国家科技部资助项目(2006BAE04B06)
关键词
非晶合金
金属玻璃
铜模浇铸法
非晶形成能力
热力学性质
显微硬度
amorphous alloys
metallic glasses
copper mold casting method
glass forming ability
thermal property
microhardness
