TY - JOUR
T1 - Neutron Diffraction and Neutron Radiography Investigation into Powder Sintering of Ti/Al and TiH2/Al Compacts
AU - Chen, Gang
AU - Liss, Klaus Dieter
AU - Cao, Peng
AU - Lu, Xin
AU - Qu, Xuanhui
N1 - Publisher Copyright:
© 2018, The Minerals, Metals & Materials Society and ASM International.
PY - 2019/2/15
Y1 - 2019/2/15
N2 - Sintering behaviors of two types of powder compact, i.e., Ti/Al and TiH2/Al, under vacuum were studied using in situ neutron diffraction, in situ thermal dilatometric measurement, and ex situ neutron radiography. Their densification, microstructure, hydrogen concentration, and phase transformation features were compared. The results indicate that the predominant phase identified in the samples sintered from both compacts is γ-TiAl phase with minor Ti3Al phase. Dehydrogenation of TiH2 plays a decisive role in the sintering behavior and the resultant microstructure. In comparison with the Ti/Al compact, dehydrogenation occurring in the TiH2/Al compact leads to a higher level of densification and faster sintering kinetics.
AB - Sintering behaviors of two types of powder compact, i.e., Ti/Al and TiH2/Al, under vacuum were studied using in situ neutron diffraction, in situ thermal dilatometric measurement, and ex situ neutron radiography. Their densification, microstructure, hydrogen concentration, and phase transformation features were compared. The results indicate that the predominant phase identified in the samples sintered from both compacts is γ-TiAl phase with minor Ti3Al phase. Dehydrogenation of TiH2 plays a decisive role in the sintering behavior and the resultant microstructure. In comparison with the Ti/Al compact, dehydrogenation occurring in the TiH2/Al compact leads to a higher level of densification and faster sintering kinetics.
UR - http://www.scopus.com/inward/record.url?scp=85057791799&partnerID=8YFLogxK
U2 - 10.1007/s11663-018-1470-x
DO - 10.1007/s11663-018-1470-x
M3 - 文章
AN - SCOPUS:85057791799
VL - 50
SP - 429
EP - 437
JO - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
JF - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
SN - 1073-5615
IS - 1
ER -