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OALib Journal期刊
ISSN: 2333-9721
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高能球磨形成具有明显玻璃转变的Ti50Cu20Ni24Si4B2非晶态合金
, PP. 299-302
Keywords: 钛.非晶态台金.过冷液体,机械合金化
Abstract:
在高能球磨作用下,名义成分为Ti50CU20Ni24Si4B2的元素粉末混合物可通过固态反应非晶化.差示扫描量热分析(DSC)表明,球磨获得的非晶相在发生晶化转变之前出现明显的玻璃转变,过冷液态温度区间的宽度(△Tx)可达到57K.非晶态Ti50CU20Ni24Si4B2合金加热时的晶化转变由一步完成,同时形成立方结构的(Ni,Cu)Ti相和其它未知相,为共晶型转变,随后发生晶化产物的进一步晶粒长大.非晶态Ti50Cu20Ni24Si4B2合金的约化玻璃转变温度(Trg)为0.56.
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