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Zr_(46.9)Cu_(45.5)Al_(5.6)Y_(2.0)金属玻璃含B2-CuZr相内生复合材料的制备及其力学性能
沈勇; 徐坚
2015-11-11
Source Publication金属学报
Issue11
Abstract通过增大铸造棒材直径来调整熔体的冷却速率,可在Zr_(46.9)Cu_(45.5)Al_(5.6)Y_(2.0)块体金属玻璃(BMG)中获得体积分数可变化的球形B2-CuZr相均匀分布于金属玻璃基体、并且具有较大尺寸的内生复合材料,其中含25%B2-CuZr相(体积分数)复合材料在压缩载荷下的塑性应变由单相金属玻璃的1.6%增大至6.5%,但在单向拉伸时样品没有观察到明显的延性应变.分析认为,复合材料在拉伸载荷下发生脆性断裂的本征原因在于CuZr相晶粒尺寸和间距与金属玻璃基体塑性区尺寸不满足尺寸匹配关系.在Zr Cu Al合金中添加2%Y(原子分数)严重损伤了金属玻璃基体的断裂韧性和塑性区尺寸...
description.department中国科学院金属研究所沈阳材料科学国家(联合)实验室
Keyword块体金属玻璃 复合材料 B2-cuzr 断裂韧性
Language中文
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74340
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
沈勇,徐坚. Zr_(46.9)Cu_(45.5)Al_(5.6)Y_(2.0)金属玻璃含B2-CuZr相内生复合材料的制备及其力学性能[J]. 金属学报,2015(11).
APA 沈勇,&徐坚.(2015).Zr_(46.9)Cu_(45.5)Al_(5.6)Y_(2.0)金属玻璃含B2-CuZr相内生复合材料的制备及其力学性能.金属学报(11).
MLA 沈勇,et al."Zr_(46.9)Cu_(45.5)Al_(5.6)Y_(2.0)金属玻璃含B2-CuZr相内生复合材料的制备及其力学性能".金属学报 .11(2015).
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