TY - JOUR
T1 - Microstructural characterisation and microanalysis of creep resistant steels
AU - Wang, M.
AU - Chiu, Y.
AU - Jones, Ian
AU - Rowlands, N.
AU - Holland, J.
AU - Zhang, Z.
AU - Flahaut, D.
PY - 2014
Y1 - 2014
N2 - Steels for high temperature applications require good creep resistance which is controlled by the chemistry and microstructure of the materials. This paper focuses on the microstructural characterisation of a creep resistant steel using electron microscopy. The existence of various primary carbides, e.g. NbC, M7C3 and M23C6 was confirmed by electron diffraction. The primary chromium carbides transformed from M7C3 to M23C6 during creep while the niobium carbides were nearly unaltered. In addition, secondary precipitates (M23C6) were observed within the matrix after creep. The size and distribution of the secondary carbides were analysed by a 80 mm2 windowless X-Max N SDD at 3 kV on an SEM. Scanning transmission electron microscopy (STEM) observations showed the appearance of fine NbC, G phase (Ni16Nb 6Si7) and (Nb, Ti)(C, N) particles.
AB - Steels for high temperature applications require good creep resistance which is controlled by the chemistry and microstructure of the materials. This paper focuses on the microstructural characterisation of a creep resistant steel using electron microscopy. The existence of various primary carbides, e.g. NbC, M7C3 and M23C6 was confirmed by electron diffraction. The primary chromium carbides transformed from M7C3 to M23C6 during creep while the niobium carbides were nearly unaltered. In addition, secondary precipitates (M23C6) were observed within the matrix after creep. The size and distribution of the secondary carbides were analysed by a 80 mm2 windowless X-Max N SDD at 3 kV on an SEM. Scanning transmission electron microscopy (STEM) observations showed the appearance of fine NbC, G phase (Ni16Nb 6Si7) and (Nb, Ti)(C, N) particles.
UR - http://www.scopus.com/inward/record.url?scp=84902990502&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/522/1/012034
DO - 10.1088/1742-6596/522/1/012034
M3 - Article
AN - SCOPUS:84902990502
SN - 1742-6588
VL - 522
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012034
ER -