Al-Cu-Cr准晶的力学性能

材料热处理学报, 2006, 27(4): 7-10. doi: 10.3969/j.issn.1009-6264.2006.04.002

Al-Cu-Cr准晶的力学性能

齐育红 ^1, , 张占平 ^2, , 刘德良 ^3, , 马永庆 ^4, , 黑祖昆 ^5,

1.大连海事大学机电与材料工程学院,辽宁,大连,16026

2.大连海事大学机电与材料工程学院,辽宁,大连,16026

3.大连海事大学机电与材料工程学院,辽宁,大连,16026

4.大连海事大学机电与材料工程学院,辽宁,大连,16026

5.大连海事大学机电与材料工程学院,辽宁,大连,16026

基金项目: 国家自然科学基金(60071010)

关键词： Al-Cu-Cr准晶 , 力学性能 , 压痕法

Mechanical properties of Al-Cu-Cr quasicrystals

用雾化法制得的Al65Cu20Cr15准晶粉末与纯铝热压合成复合材料,在热压和热处理状态下复合材料中的颗粒为尺寸在35-160μm范围的Al-Cu-Cr二十面体准晶和十次准晶及其类似相.采用维氏压痕实验技术测试估算了Al-Cu-Cr准晶颗粒的力学性能.结果表明,热压状态下的Al-Cu-Cr二十面体准晶材料的断裂韧性和抗拉强度约为0.82MPa·m1/2和715MPa,经退火处理后得到的Al-Cu-Cr十次准晶及其类似相材料的断裂韧性和抗拉强度约为1.07MPa·m1/2和879MPa,淬火处理后约为1.15MPa·m1/2和1054MPa,与Al-Cu-Cr二十面体准晶材料相比有所提高,淬火态的Al-Cu-Cr十次准晶材料的断裂韧性和抗拉强度最高.

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