화학공학소재연구정보센터
Korean Journal of Materials Research, Vol.25, No.1, 32-36, January, 2015
Microstructure and Mechanical Properties of Mg-Li Powder by Hot Rolling Process
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Hot rolling of Mg-6Zn-0.6Zr-0.4Ag-0.2Ca-(0, 8 wt%)Li powder was conducted at the temperature of 300 oC by putting the powder into the Cu pipe. The microstructure and mechanical properties of the samples were observed. Mg-6Zn-0.6Zr-0.4Ag-0.2Ca without Li element was consisted of α phase and precipitates. The microstructure of the 8 wt%Li containing alloy consisted of two phases (α-Mg phase and β-Li phase). In addition, Mg2Zn3Li was formed in 8%Li added Mg-6Zn-0.6Zr-0.4Ag-0.2Ca alloy. By addition of the Li element, the non-basal planes were expanded to the rolling direction, which was different from the based Mg alloy without Li. The tensile strength was gradually decreased from 357.1 MPa to 264 MPa with increasing Li addition from 0% to 8%Li. However, the elongation of the alloys was remarkably increased from 10 % to 21% by addition of the Li element to 8%. It is clearly considered that the non-basal texture and β phase contribute to the increase of elongation and formability.
  1. Mendis C, Oh-ishi K, Ohkubo T, Hono K, Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process., 535, 122 (2012)
  2. Son HT, Kim YH, Kim JH, Yoo HS, J. Alloy. Compd., 564, 130 (2013)
  3. Yamamoto A, Ashida T, Kouta Y, Kim KB, Mater. Trans., 44(4), 619 (2003)
  4. Kumar V, Govind, Shekhar R, Balasubramaniam R, Balani K, Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process., 547, 38 (2012)
  5. Chang TC, Wang JY, Chu CL, Lee S, Mater. Lett., 60, 3272 (2006)
  6. Miao Q, Hu LX, Sun HF, Wang ED, Trans. Nonferrous Met. Soc. China, 19, s326 (2009)
  7. Lim HK, Kim DH, Lee JY, Kim WT, Kim DH, J. Alloy. Compd., 468, 308 (2009)
  8. Mendis C, Oh-iShi K, Hono K, Scr. Mater., 57, 485 (2007)
  9. Mendis C, Oh-iShi K, Kawamura Y, Honma T, Kamado S, Hono K, Acta Mater., 57, 749 (2009)
  10. Dong HW, Wang LD, Wu YM, Wang LM, J. Alloy. Compd., 506, 468 (2010)
  11. Yan H, Chen RS, Han EH, Trans. Nonferrous Met. Soc. China, 20, s550 (2010)
  12. Ziang B, Wu Z, Zhang M, J. Alloy. Compd., 509, 1615 (2011)
  13. Li M, Hao H, Zhang A, Song Y, Zhang X, J. Rare Earth, 30(5), 492 (2012)
  14. Chang LL, Cho JH, Kang SB, J. Mater. Process. Technol., 211, 1527 (2011)
  15. Chang TC, Wang JY, C. M. O, Lee S, J. Mater. Process. Technol., 140, 588 (2003)