Hot Deformation Behavior and Processing Maps of the Extruded CuCr25 Alloy

CHEN Gang, DUAN Wei-liang, WU Xu-sheng

Abstract

Isothermal compression tests of extruded CuCr25 alloy were carried out at the temperature range of 750~900 ℃ and at the strain rate range of 0.01~10 s-1 on Gleeble-3500D system. The experiment results showed that the flow stress decreased with the increase of deformation temperature and the decrease of strain rate, which could be described by hyperbolic-sine equation with the average hot deformation activation energy Q of 383.4 kJ/mol. The processing maps were calculated on the basis of the dynamic materials model. The optimum processing parameters were proved to be the deformation temperature range of 830~900 ℃ and the strain rate range of 0.01~0.1 s-1 was obtained by processing maps and deformed microstructural observation.

 

 

Keywords: extruded CuCr25 alloy,  hot compression deformation,  hot deformation activation energy,  processing maps


Full Text:

PDF


References


XIAN Ai-ping. ZHU Yao-xiao. The development of manufacture processing for Cu-Cr contact alloy [J] Acta Metallurgica Sinca. 2003.9(3):225 — 233. (In Chinese)

WANG Xin jian, DONG Xian ping. WU Jian sheng. Effects of Cr dopant on the microstructure and electromigration performance of Cu interconnects [J], Applied Surface Science. 2009, 225(30).9273-9278.

LI Xiao-yan. WANG Shun-xing. TIAN Bao-hong. Present status and development of Cu-Cr contact materials[J]. Nonferrous Metals Processing.2007.36(4): 10—15. (In Chinese)

PRASAD Y V R K. SESHACHARYULU T. Processing maps for hot working of titanium alloys[J]. Materials Science and Engineering A. 1998. 243(1/2) : 82 —88.

WANG С Y. WANG X J. CHANG H. et at. Processing map for hot working of ZK60 magnesium alloy [J]. Materials Science and Engineering A. 2007. 464(1/2): 52 —58.

ZHANG Hui. WU Hao-jie. JIANG Fu-lin. Hot deformation behavior and processing map of 4045 aluminum alloy [J]. Journal of Hunan University;Natural Sciences. 2013. 40(8) ;83 — 89. (In Chinese)

ZHANG Yi. LIU Ping.TIAN Bao-hong. et al. Hot deformation behavior and processing map of Cu-Ni-Si-P alloy [J]. Trans Nonferrous Met Soc China,2013,23s2341 — 2347.

ZHANG Hui. ZHANG Hong-gang. PENG Da shu. Hot deformation behavior of KFC copper alloy during compression at elevated temperatures [J]. Trans Nonferrous Met Soc China. 2006.16:562-566.

ZHANG L. LI Z. LEI Q.et al. Hot deformation behavior of Cu-8. 0Ni-l. 8-Si-O. 15Mg alloy [J]. Materials Science and Engineering A, 2011. 528: 1641 —1647.

LIU Yong. SUN Yong-wei. TIAN Bao-hong. al et. Effect of W content on hot deformation behavior of W-Cu composite at elevated temperature[J]. The Chinese Journal of Nonferrous Metals. 2012.22(9): 2553-2558. (In Chinese)

XIAO Yan-hong. GUO Cheng. GUO Xiao-yan. Constitutive modeling of hot deformation behavior of H62 brass[J]. Materials Science and Engineering A.2011 .528:6510 — 6518.

GRONOSTAJSK Z. The deformation processing map for control of microstructrue in CuAl9. 2Fe3 aluminium bronze[J]. Journal of Materials Processing Technology. 2002. 125/126: 119-124.


Refbacks

  • There are currently no refbacks.