TY - JOUR
T1 - Formation process and cross-sectional hardness of a Cr-alloyed layer on Ti6Al4V alloy
AU - Yu, Shouming
AU - Liu, Daoxin
AU - Cui, Tengfei
AU - Zhang, Xiaohua
N1 - Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2015/12/15
Y1 - 2015/12/15
N2 - A Cr-alloyed layer consisting of five sublayers was prepared on Ti6Al4V substrate via double glow plasma surface alloying technology at 800 °C. The formation process and cross-sectional hardness of the Cr-alloyed layer were studied in detail. The results showed that a set of new phase layers (i.e., Cr, TiCr2, Ti4Cr, (βTi,Cr) and (αTi,Cr) sublayers) formed at 800 °C; however, the (βTi,Cr) phase decomposed and separated out the Ti4Cr phase when the temperature decreased. Additionally, the TiCr2 phase had the highest hardness while Ti4Cr phase had the lowest hardness. Precipitation of the soft Ti4Cr phase from the (βTi,Cr) phase therefore limited the improvement of the hardness and led to an unusual change: increasing the Cr content led to a lower hardness.
AB - A Cr-alloyed layer consisting of five sublayers was prepared on Ti6Al4V substrate via double glow plasma surface alloying technology at 800 °C. The formation process and cross-sectional hardness of the Cr-alloyed layer were studied in detail. The results showed that a set of new phase layers (i.e., Cr, TiCr2, Ti4Cr, (βTi,Cr) and (αTi,Cr) sublayers) formed at 800 °C; however, the (βTi,Cr) phase decomposed and separated out the Ti4Cr phase when the temperature decreased. Additionally, the TiCr2 phase had the highest hardness while Ti4Cr phase had the lowest hardness. Precipitation of the soft Ti4Cr phase from the (βTi,Cr) phase therefore limited the improvement of the hardness and led to an unusual change: increasing the Cr content led to a lower hardness.
KW - Cr-alloyed layer
KW - Cross-sectional hardness
KW - Diffusion
KW - Phase transformation
KW - Ti<inf>4</inf>Cr phase
UR - http://www.scopus.com/inward/record.url?scp=84942517869&partnerID=8YFLogxK
U2 - 10.1016/j.matlet.2015.09.024
DO - 10.1016/j.matlet.2015.09.024
M3 - 文章
AN - SCOPUS:84942517869
SN - 0167-577X
VL - 161
SP - 724
EP - 726
JO - Materials Letters
JF - Materials Letters
M1 - 19540
ER -