自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 13    No. 2    April 2006

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Effects of Ag on microstructure and mechanical properties
of 2519 aluminum alloy
LI Hui-zhong(李慧中), ZHANG Xin-ming(张新明), CHEN Ming-an(陈明安),
ZHOU Zhuo-ping(周卓平)

School of Materials Science and Engineering, Central South University, Changsha 410083, China

Abstract:The effects of Ag on the microstructure and mechanical properties of 2519 aluminum alloy were investigated by means of tensile test, micro-hardness test, transmission electron microscope and scanning electron microscope. The results show that the addition of 0.3% (mass fraction) Ag accelerates 2519 aluminum alloy s age-hard-ening, increases its peak hardness and reduces 4 h of peak aged time at 180℃. The addition of 0.3%(mass fraction) Ag increses the tensile strength at room temperature and elevated temperature. This increment at room temperature and 200℃is 24 MPa and 78 MPa, respectively. In contrast, the elongation of 2519 aluminum alloy is decreased with Ag addition. The increase of tensile strength of 2519 aluminum alloy with Ag addition is attributed to the high volume fraction ofΩphase.

 

Key words: 2519 aluminum alloy; Ag; ageing; mechanical properties; microstructure

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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