摘要
用X射线衍射(XRD)与示差扫描量热仪(DSC)研究了添加Nb元素对Zr57Al15-xCu15.4Ni12 .6Nbx合金的非晶形成能力的影响以及冷却速率对非晶形成的影响,同时研究了形成的块体非晶合金以及热处理后的压缩性能。结果表明:当Nb的摩尔分数达到5 %时(即Zr57Al10 Cu15.4Ni12 .6Nb5) ,合金具有最强的非晶形成能力,该块体非晶合金的压缩强度达170 5MPa ,相对压缩率约为0 .10 4%。热处理后,当非晶合金中出现分离相或晶化析出相时,压缩强度将急剧下降。
The influence of Nb and cooling rate on the amorphous formation ability of amorphous Zr_ 57Al_ 15-xCu_ 15.4Ni_ 12.6Nb_x alloy was examined by XRD and DSC.The compression strength of the as-cast and heat treated bulk amorphous alloy was researched.It was found that amorphous Zr_ 57Al_ 15-xCu_ 15.4Ni_ 12.6Nb_x alloy containing 5%Nb(atom fraction) has the highest amorphous formation ability,in which the compression strength can reach up to 1705 MPa and the relative compression rate is about 0.104%.The compression strength of heat treated amorphous alloy is decreased remarkably due to the occurrence of precipitated phase or crystallization phase in the amorphous alloy.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2005年第4期203-204,共2页
Special Casting & Nonferrous Alloys
基金
国家自然科学基金资助项目 (50 371 0 2 0 )
广东省科技计划资助项目 (2 0 0 3B1 2 1 0 6)
广东省自然科学基金资助项目 (2 0 0 1 0 0 56)
关键词
非晶形成能力
ZrAlCuNiNb块体非晶合金
压缩强度
Amorphous Formation Ability,Amorphous Bulk Zr_ 57Al_ 15-xCu_ 15.4Ni_ 12.6Nb_x Alloy,Compression Strength
