TY - JOUR
T1 - Microstructure evolution of a Zn-4wt.% Cu hyperperitectic alloy under laser surface remelting
AU - Huang, Weidong
AU - Su, Yunpeng
AU - Wang, Meng
AU - Lin, Xin
PY - 2005
Y1 - 2005
N2 - Laser surface remelting experiments on Zn-4.0wt.%Cu hyperperitectic alloy have been performed on a 5kW CW CO2 laser with the scanning velocities between 6 and 1207mm/s. Microstructures in both longitudinal and transverse section of the molten pools have been analyzed by optical microscope and SEM technique, and the average composition in the molten pools has been measured by Electron Probe Microanalysis(EPMA). With the increasing of growth rate, the microstructures of Zn-4.0 wt.%Cu alloy change from planar interface to lamellar structures and then cellular structures, and finally to absolute stability planar interface at a growth rate of 562mm/s, which shows reasonable agreement with that predicted by M-S theory.
AB - Laser surface remelting experiments on Zn-4.0wt.%Cu hyperperitectic alloy have been performed on a 5kW CW CO2 laser with the scanning velocities between 6 and 1207mm/s. Microstructures in both longitudinal and transverse section of the molten pools have been analyzed by optical microscope and SEM technique, and the average composition in the molten pools has been measured by Electron Probe Microanalysis(EPMA). With the increasing of growth rate, the microstructures of Zn-4.0 wt.%Cu alloy change from planar interface to lamellar structures and then cellular structures, and finally to absolute stability planar interface at a growth rate of 562mm/s, which shows reasonable agreement with that predicted by M-S theory.
KW - Absolute stability
KW - Laser surface remelting
KW - Microstructure evolution
KW - Zn4.0wt.%Cu hyperperitectic alloy
UR - http://www.scopus.com/inward/record.url?scp=17044374039&partnerID=8YFLogxK
U2 - 10.4028/0-87849-960-1.2611
DO - 10.4028/0-87849-960-1.2611
M3 - 会议文章
AN - SCOPUS:17044374039
SN - 0255-5476
VL - 475-479
SP - 2611
EP - 2614
JO - Materials Science Forum
JF - Materials Science Forum
IS - IV
T2 - PRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing
Y2 - 2 November 2004 through 5 November 2004
ER -