Micro-alloying Effects of Mn in 2297 Al-Li Alloy

被引：0
|
作者：
Sang Fengjian [1 ]
Zheng Ziqiao [1 ]
Wang Haijin [1 ]
机构：
[1] Cent S Univ, Changsha 410083, Hunan, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2018年 / 47卷 / 03期
关键词：
2297 Al-Li alloy; Mn; Al3Zr; recrystallization; ALUMINUM-ALLOYS; PLASTIC-DEFORMATION; FRACTURE-BEHAVIOR; MICROSTRUCTURE; CU; PRECIPITATION; ZR; RECRYSTALLIZATION; SEGREGATION; ZIRCONIUM;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of trace Mn addition on microstructure and mechanical properties of 2297 Al-Li alloy were investigated by optical microscopy, tensile test, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and scanning transmission electron microscopy (STEM) fitted with high-angle annular dark field detector (HAADF). The results show that Mn exists in the form of AICuMn rod-like disperse particle and Al(CuMnFe) coarse phase in the 2297 alloy. In addition, the Al(CuMnFe) phases in 2297 alloy are uniformly distributed and the size of the coarse particles is smaller than that in Mn-free alloy. As a result, the ultimate tensile strength of 2297 alloy is enhanced. The addition of Mn has no influence on the precipitation behavior of Al3Zr particles. And although the AICuMn rod-like dispersed phases are precipitated, the level of recrystallization in 2297 alloy is not changed.
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页码：871 / 877
页数：7
相关论文
共 25 条
  • [1] Chen YN, 2009, RARE METAL MAT ENG, V38, P42
  • [2] Understanding a microstructure using GOS (Grain Orientation Spread) and its application to recrystallization study of hot deformed Al-Cu-Mg alloys
    Cheong, S.
    Weiland, H.
    [J]. RECRYSTALLIZATION AND GRAIN GROWTH III, PTS 1 AND 2, 2007, 558-559 : 153 - +
  • [3] The effect of processing and microstructure development on the slip and fracture behavior of the 2.1 wt pct Li AF/C-489 and 1.8 wt pct Li AF/C-458 Al-Li-Cu-X alloys
    Csontos, AA
    Starke, EA
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2000, 31 (08): : 1965 - 1976
  • [4] Fan CP, 2015, RARE METAL MAT ENG, V44, P91
  • [5] Microstructure and precipitation in Al-Li-Cu-Mg-(Mn, Zr) alloys
    Gao, N
    Starink, MJ
    Davin, L
    Cerezo, A
    Wang, SC
    Gregson, PJ
    [J]. MATERIALS SCIENCE AND TECHNOLOGY, 2005, 21 (09) : 1010 - 1018
  • [6] Superplastic behavior of an Al-Mg alloy at elevated temperatures
    Kaibyshev, R
    Musin, F
    Lesuer, DR
    Nieh, TG
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 342 (1-2): : 169 - 177
  • [7] Recrystallization behaviour of Al-2Li-3Mg-1Cu-0.12Zr-XMn (X=0,0.5) alloy
    Kim, YB
    Chung, YH
    Cho, KK
    Shin, MC
    [J]. SCRIPTA MATERIALIA, 1997, 36 (01) : 111 - 116
  • [8] LAVERNIA EJ, 1990, J MATER SCI, V25, P1137
  • [9] Li Y, 2008, ICAA 11 11 INT C AL
  • [10] Deformation behavior of an Al-Cu-Mg-Mn-Zr alloy during hot compression
    Li, Yao
    Liu, Zhiyi
    Lin, Lianghua
    Peng, Jiangtao
    Ning, Ailin
    [J]. JOURNAL OF MATERIALS SCIENCE, 2011, 46 (11) : 3708 - 3715
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