Damping Properties of Homogenized and Cold-Rolled Mg-14.3Li-0.8Zn β-Phase Magnesium Alloy

被引：3
|
作者：
Chang, Shih-Hang [2 ]
Wu, Shyi-Kaan [1 ]
Li, Ying-Hsuan [1 ]
Lin, Ke-Chun [1 ]
Bor, Hui-Yun [3 ]
机构：
[1] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 106, Taiwan
[2] Natl Ilan Univ, Dept Chem & Mat Engn, Ilan 260, Taiwan
[3] Chung Shang Inst Sci & Technol, Mat & Optoelect Res Div, Met Sect, Tao Yuan 325, Taiwan
来源：
MATERIALS TRANSACTIONS | 2012年 / 53卷 / 02期
关键词：
damping; magnesium alloys; dynamic mechanical analysis; high-temperature damping background; INTERNAL-FRICTION; LITHIUM ALLOYS; LI ALLOY; TEMPERATURE; MG; MICROCRYSTALLINE; FLOW;
D O I：
10.2320/matertrans.M2011174
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
As-homogenized beta-phase Mg-14.3Li-0.8Zn (LZ141) alloy exhibits a P-1 peak and a conspicuous high-temperature damping background (HTDB) in the heating internal friction Q(-1) curves. Cold-rolled LZ141 alloy with 80% thickness reduction exhibits a significant P-2 peak in the Q(-1) curves due to the recrystallization process during heating. The activation energy (H) of the HTDB for as-homogenized LZ141 alloy is 1.44 eV, decreasing to 0.91 eV after 80% cold-rolling. These H values for beta-phase LZ141 alloy are lower than those for a-phase AZ80 alloy. Cold-rolled LZ141 alloy exhibits extremely high damping capacity at temperatures around the P-2 peak. [doi:10.2320/matertrans.M2011174]
引用
收藏
页码：407 / 411
页数：5
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