Effects of heat treatment and Re-content on the TCP-phase in two Ni-Mo-Cr-Re superalloys

金属学报(英文版), 2009, 22(5): 365-372. doi: 10.1016/S1006-7191(08)60110-6

^1, , ^2, , ^3, , ^4,

1.School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110023, China;National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, USA

2.National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, USA

3.National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, USA

4.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

基金项目: The authors would like to gratefully acknowledge the financial support from the National High Magnetic Field Laboratory under NSF DMR-0084173

Effects of heat treatment and Re-content on the TCP-phase in two Ni-Mo-Cr-Re superalloys

Pingli MAO ^1, , Yan XIN ^2, , Ke HAN ^3, , Weiguo JIANG ^4,

1.School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110023, China;National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, USA

2.National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, USA

3.National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, USA

4.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

Keywords： Heat treatment

The volume fraction and morphology of the TCP-phase formed in two kinds of Ni-Mo-Cr-Re superalloys under different heat treatment conditions were investigated in this paper. In Re-5% alloy, with increasing of the heat treatment temperature and prolonging the holding time, the volume fraction of TCP-phase decreased and the TCP-phase size increased. At relatively lower temperature, the TCP-phase prefers to present in the dendrite cores. In Re-10% alloy, the volume fraction and size have the same change tendency as that of in Re-5% alloy, but the morphology will change from needle-like and block-like to sphere when the temperature increases. The TCP-phases formed in these two Ni-Mo-Cr-Re alloys are σ and P phase.

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Effects of heat treatment and Re-content on the TCP-phase in two Ni-Mo-Cr-Re superalloys

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