Assessment of diffusion mobility for bcc phase of Ti–Al–Ni ternary system

Calphad ◽  
2020 ◽  
Vol 71 ◽  
pp. 102203
Author(s):  
Qiaojun Wu ◽  
Guanglong Xu ◽  
Hui Chang ◽  
Lian Zhou ◽  
Yuwen Cui
Keyword(s):  
Ternary System ◽  
Diffusion Mobility ◽  
Bcc Phase

Experimental investigations of fcc/bcc phase equilibria in the Cr–Mn–Ni ternary system

2020 ◽  
Vol 127 ◽  
pp. 106994
Author(s):  
Haoge Li ◽  
Jingjing Ruan ◽  
Nobufumi Ueshima ◽  
Katsunari Oikawa
Keyword(s):  
Ternary System ◽  
Phase Equilibria ◽  
Experimental Investigations ◽  
Bcc Phase

Microstructural Evolution and Mechanical Properties of Al3-based Multi-Phase Alloys

2000 ◽  
Vol 646 ◽  
Author(s):  
Seiji Miura ◽  
Juri Fujinaka ◽  
Rikiya Nino ◽  
Tetsuo Mohri
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Ternary System ◽  
Phase Region ◽  
Quaternary Alloys ◽  
Two Phase ◽  
System A ◽  
Preliminary Study ◽  
Multi Phase ◽  
Bcc Phase

ABSTRACTA preliminary study on the phase relations in Al-Mo-Ti-X quaternary systems in the vicinity of Ti-trialuminide phases is carried out with various additives X= Mn, Cr, Fe, Ni and Ag. In the Al-Mo-Ti ternary system, a bcc-phase field extends from the Ti-Mo edge to high Al region at high temperatures and it equilibrates with a DO22-Al3Ti phase containing a large amount of Mo. It is found that, by additions of X= Mn, Cr, Fe or Ni, an L12-(Al, X)3 Ti phase appears near the two-phase region composed of the DO22-Al3 Ti and bcc phases in the Al-Mo-Ti ternary system. By heat treatment at 1223 K, the bcc phase of quaternary alloys decomposes into the A15-Mo3Al, DO22, L12 and/or σ phases, and no voids are observed. The mechanical properties of these alloys are also investigated by Vickers hardness.

Formation of β-Ti Phase in Multi-component Gamma Alloys

2002 ◽  
Vol 753 ◽  
Author(s):  
Satoru Kobayashi ◽  
Masao Takeyama ◽  
Takahiro Motegi ◽  
Noriaki Hirota ◽  
Takashi Matsuo
Keyword(s):  
Ternary System ◽  
Critical Concentration ◽  
Phase Region ◽  
Group Element ◽  
Hot Workability ◽  
Quaternary Alloys ◽  
Two Phase ◽  
Β Phase ◽  
Bcc Phase ◽  
Quasi Ternary System

ABSTRACTEffect of combined addition of elements on the formation of high-temperature β-Ti (bcc) phase in Ti-45Al-M1-M2 quaternary alloys has been examined by converting the quaternary system to quasi-ternary system using M1-equivalency of M2: [M1] eq = k [M2]. The k value is evaluated from the ratio of critical concentration, XcM, to form the β phase in the isothermal section of each ternary system at 1473 K: kM1/M2= XcM1/XcM2. In case that M1 and M2 are in the same group element, Mo-equivalency of Cr, kMo/Cr = 0.46 and Nb-equivalency of V, kNb/V = 0.57. The critical concentrations to form the β phase in the quaternary systems become lower than those estimated from these values, and the experimentally determined equivalencies become 0.8 and 1.0, respectively. These results suggest an existence of negative interaction between M1 and M2 to stabilize the β phase even if they were in the same group element. Experimentally determined quaternary phase diagram revealed that the combined addition makes the β+α two-phase region expand to lower temperatures, thereby effective in improving hot workability for development of wrought gamma alloys.

Computational study of atomic mobility for the bcc phase of the U–Pu–Zr ternary system

2010 ◽  
Vol 407 (3) ◽  
pp. 220-227 ◽  
Author(s):  
Weibang Li ◽  
Rui Hu ◽  
Y.-W. Cui ◽  
Hong Zhong ◽  
Hui Chang ◽  
...  
Keyword(s):  
Ternary System ◽  
Computational Study ◽  
Atomic Mobility ◽  
Bcc Phase

Assessment of diffusion mobility for the bcc phase of the Ti–Al–Cr system

Calphad ◽  
2011 ◽  
Vol 35 (3) ◽  
pp. 384-390 ◽  
Author(s):  
Weibang Li ◽  
Bin Tang ◽  
Y.-W. Cui ◽  
Rui Hu ◽  
Hui Chang ◽  
...  
Keyword(s):  
Diffusion Mobility ◽  
Cr System ◽  
Bcc Phase

A NEW COMPOUND IN THE TERNARY SYSTEM, Li2O-TiO2-Nb2O5

1986 ◽  
Vol 47 (C1) ◽  
pp. C1-467-C1-472
Author(s):  
S. SHIMADA ◽  
C. KAWAI ◽  
K. KODAIRA ◽  
T. MATSUSHITA
Keyword(s):  
Ternary System
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