稀土Gd掺杂对锆基块体非晶合金玻璃形成能力及力学性能的影响

金属学报, 2009, 45(2): 243-248. doi: 10.3321/j.issn:0412-1961.2009.02.021

稀土Gd掺杂对锆基块体非晶合金玻璃形成能力及力学性能的影响

孙亚娟 ^1, , 魏先顺 ^2, , 黄永江 ^3, , 沈军 ^4,

1.哈尔滨工业大学材料科学与工程学院,哈尔滨,150001

2.哈尔滨工业大学材料科学与工程学院,哈尔滨,150001

3.哈尔滨工业大学材料科学与工程学院,哈尔滨,150001

4.哈尔滨工业大学材料科学与工程学院,哈尔滨,150001

基金项目: 国家自然科学基金(50771040)

关键词：锫基块体非晶合金 , 玻璃形成能力 , 力学性能

EFFECT OF Gd ADDITION ON THE GLASS FORMING ABILITY AND MECHANICAL PROPERTIES IN A Zr-BASED BULK AMORPHOUS ALLOY

适量的Gd掺杂可提高Zr50.7Cu28Ni9Al12.3块体非晶合金的玻璃形成能力,当Gd元素掺杂量(原子分数)为1%时,即(Zrs0.7Cu28Ni9Al12.3)99Gd1,柱状非晶合金直径可达16 mm(不掺杂时为14 mm).稀土Gd掺杂降低了锆基块体非晶合金的断裂强度与塑性变形能力.随着Gd含量的增加,其断裂方式由单一的剪切断裂转变为剪切断裂与破碎断裂的复合形式,且含Gd元素掺杂的非晶合金断口呈现了脉状纹络与纳米周期性条纹共存的特征.

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稀土Gd掺杂对锆基块体非晶合金玻璃形成能力及力学性能的影响

EFFECT OF Gd ADDITION ON THE GLASS FORMING ABILITY AND MECHANICAL PROPERTIES IN A Zr-BASED BULK AMORPHOUS ALLOY

参考文献