THE ELASTIC-MODULUS OF ALUMINUM-LITHIUM ALLOYS
THE ELASTIC-MODULUS OF ALUMINUM-LITHIUM ALLOYS
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DOI：
10.1007/bf00591481
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发表时间：
1982-01-01
影响因子：
4.5
通讯作者：
DINSDALE, K
中科院分区：
文献类型：
--
作者：
NOBLE, B;HARRIS, SJ;DINSDALE, K
杨氏模量的测量已经在铝锂合金含有高达32原子%的锂，在试图确定的原因，高模量的特点，这种潜在的重要的合金系统。在商业上感兴趣的合金（7-11原子%，2-3重量%锂）中，模量在79至83 GPa的范围内，实际值取决于热处理条件。对这种增加的模量的主要贡献来自固溶体中的锂。Al 3Li和AlLi金属间化合物相的杨氏模量估计分别为96 GPa和105 GPa。向Al-Li体系中添加镁会使模量略有降低，例如4.5at%（4wt%）的镁使模量降低约2GPa。
Young's modulus measurements have been made on Al-Li alloys containing up to 32 at % lithium, in an attempt to determine the cause of the high modulus that characterizes this potentially important alloy system. In alloys of commercial interest (7–11 at %, 2–3 wt % lithium) the modulus is in the range 79 to 83 GPa, the actual value depending on heat-treatment conditions. The major contribution to this increased modulus arises from lithium in solid solution. The Young's moduli of the Al3Li and AlLi intermetallic phases are estimated to be 96 GPa and 105 GPa respectively. Additions of magnesium to the Al-Li system produce a small decrease of the modulus, e.g. 4.5 at % (4 wt %) magnesium reduces the modulus by approximately 2 GPa.