PORE FORMATION DURING REACTIVE SINTERING OF EXTRUDED TITANIUM ALUMINUM POWDER MIXTURES

被引：0

作者：

DAHMS, M ^{[1
]}

LEITNER, G ^{[1
]}

POESSNECKER, W ^{[1
]}

SCHULTRICH, S ^{[1
]}

SCHMELZER, F ^{[1
]}

机构：

[1] FRAUNHOFER EINRICHTUNG KERAM TECHNOL & SINTERWERKSTOFFE,O-8020 DRESDEN,GERMANY

来源：

ZEITSCHRIFT FUR METALLKUNDE | 1993年 / 84卷 / 05期

关键词：

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A powder mixture Ti-49 at.% Al was extruded at room temperature. Swelling due to phase transformation during annealing was studied using differential scanning calorimetry and dilatometry. It is the result of several processes: (i) Kirkendall pores during solid state interdiffusion, (ii) macro-pores during the reaction of liquid aluminium and solid titanium, (iii) interdiffusion of Al3Ti and pure titanum forming the intermetallic phases gamma-TiAl and alpha2-Ti3Al. Swelling is anisotropic due to the elongated titanium particles. Sintering occurs at higher temperatures depending on the microstructure after Al3Ti formation. For technological applications, minimization of porosity is possible by optimization of the time - temperature path.

引用

页码：351 / 357

页数：7

共 50 条

[21] Structure and phase formation in boron carbide and aluminum powder mixtures during hot pressing
Yu. G. Tkachenko
V. F. Britun
D. Z. Yurchenko
M. S. Kovalchenko
I. I. Timofeeva
L. P. Isaeva
Powder Metallurgy and Metal Ceramics, 2011, 50
[22] A theoretical and experimental study of phase formation in Ti-CuO powder mixtures under reactive sintering conditions
Safronova, V. S.
Knyazeva, A. G.
Korosteleva, E. N.
NEW JOURNAL OF CHEMISTRY, 2025, 49 (03) : 893 - 909
[23] Void formation by the reactive diffusion of titanium and aluminum foils
Fukutomi, H
Nakamura, M
Suzuki, T
Takagi, S
Kikuchi, S
MATERIALS TRANSACTIONS JIM, 2000, 41 (09): : 1244 - 1246
[24] Pore formation mechanism and intermetallic phase transformation in Ti-Al alloy during reactive sintering
Kayani, Saif Haider
Cui, Min
Ahmed, Rana Tariq Mehmood
Cho, Young -Hee
Lee, Jung-Moo
Park, Nho-Kwang
Ajmal, Hafiz Muhammad Salman
Euh, Kwangjun
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2023, 22 : 1878 - 1887
[25] Sinterability and Microstructure Evolution During Sintering of Ferrous Powder Mixtures
Demetrio, Ketner Bendo
Klein, Aloisio Nelmo
Schaeffer, Lirio
Consoni, Deise Rebelo
Martinelli, Antonio Eduardo
Bendo, Tatiana
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS, 2013, 16 (05): : 1030 - 1038
[26] REACTIONS OF NB-AL POWDER MIXTURES DURING SINTERING
SCHULZE, K
RICKES, B
PETZOW, G
JOURNAL OF THE LESS-COMMON METALS, 1984, 100 (JUL): : 429 - 441
[27] LIQUID-PHASE REACTION SINTERING OF POWDER MIXTURES IN THE ALUMINUM IRON SYSTEM
RUSIN, NM
SAVITSKII, AP
POWDER METALLURGY AND METAL CERAMICS, 1993, 32 (01) : 27 - 31
[28] Temperature measurements during selective laser sintering of titanium powder
Fischer, P
Locher, M
Romano, V
Weber, HP
Kolossov, S
Glardon, R
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2004, 44 (12-13): : 1293 - 1296
[29] Pore collapse in powder metal mixtures during shock compression
Reding, D. J.
JOURNAL OF APPLIED PHYSICS, 2009, 105 (08)
[30] Features of In Situ Structure Formation in Powder Materials Based on Titanium and Refractory Compound during Vacuum Sintering
Korosteleva, E. N.
Pribytkov, G. A.
Korzhova, V. V.
Krinitcyn, M. G.
PROCEEDINGS OF THE ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES, 2018, 2051

← 1 2 3 4 5 →