Modern Developments in Powder Metallurgy: Volume 5: Materials and Properties Proceedings of the 1970 International Powder Metallurgy Conference, sponsored by the Metal Power Industries Federation and the American Powder Metallurgy Institute

485 Pages·1995·19.774 MB·English

by  Gerald I. Friedman, John M. Kazaroff (auth.), Henry H. Hausner (eds.)

MODERN DEVELOPMENTS
IN
POWDER METALLURGY
Volume 5: Materials and Properties
MODERN DEVELOPMENTS IN POWDER METALLURGY
Edited by Henry H. Hausner
1966: Proceedings of the 1965 International
Powder Metallurgy Conference
Volume 1: Fundamentals and Methods
Volume 2: Applications
Volume 3: Development and Future Prospects
1971: Proceedings of the 1970 International
Powder Metallurgy Conference
Volume 4: Processes
Volume 5: Materials and Properties
MODERN DEVELOPMENTS
IN
POWDER METALLURGY
Proceedings of the 1970 International Powder Metallurgy Conference, spon
sored by the Metal Powder Industries Federation and the American Powder
Metallurgy Institute.
Editor
Henry H. Hausner
Adjunct Professor, Polytechnic Institute of Brooklyn
and Consulting Engineer
New York, N. Y.
Volume 5
Materials and Properties
g:>
PLENUM PRESS· NEW YORK-LONDON· 1971
These two-volume Proceedings of the 1970 International Powder Metal
lurgy Conference, published under the title Modem Developments in
Powder Metallurgy, also comprise Volume 26 of the series Progress in
Powder Metallurgy, published by the Metal Powder Industries Federation.
ISBN-13: 978-1-4615-8965-5 e-ISBN-13: 978-1-4615-8963-1
DOl: 10.1007/978-1-4615-8963-1
Library of Congress Catalog Card Number 61-65760
© 1971 Metal Powder Industries Federation
Softcover reprint of the hardcover 1st edition 1971
Plenum Press
A Division of Plenum Publishing Corporation
227 West 17 Street, New York, N. Y.10011
All rights reserved
CONTENTS
NEW P/M MATERIALS
Properties of Hot Pressed Titanium Alloy Powders
for. Cryogenic Applications •••••• 3
G. I. Friedman and J. M. Kazaroff
Improved Sintering Procedures for Aluminum P/M
Parts •••• 19
• • • • • 0
J. H. Dudas and C. B. Thompson
Experimental Manufacture of Inconel Alloy 718
Compressor Rotor Blades from Metal
Powder Preforms • • • • 37
• • 00. •
B. Triffleman, F. C. Wagner, and K. K. Irani
Elevated Temperature Mechanical Properties of a
Dispersion Strengthened Superalloy •••••••• 47
J. S. Benjamin and R. L. Cairns
New Developments in Superalloy Powders 73
S. H. Reichman and J. W. Smythe
A Correlation of Mechanical Properties of Sintered
U-700 Powder with Particle Boundary
Morphology 85
K. H. Moyer
DISPERSION STRENGTHENING
The Stability of Oxide Dispersions in Iron- and
Nickel-Based Alloys • • • • • • • • • • • •• 97
H. Fischmeister and Eo Navara
Hardening with a Dispersion of Small Holes 109
• • • • • • 0 0 •
M. A. Eudier
v
vi CONTENTS
Dispersion-Hardened Materials with Copper as a
Base Metal •••••••••• 125
H. Schreiner and H. Ohmann
The High-Temperature Strength of Oxide-Strengthened
Nickel Alloys • • • • • • • • • • • • l37
R. F. Cheney and W. Scheithauer, Jr.
The Manufacture and Properties of High-Conductivity
High Strength Cu-Th02 • • • • • • • • 149
W. Scheithauer, Jr., R. F. Chaney, and N. E. Kopatz
Dispersion Strengthened Ferritic Heat-Resisting Steel • • 159
T. Oda and T. Daikoku
P/M REFRACTORY MATERIALS AND
SPECIALTY PRODUCTS
Relations between Stereometric Microstructure and
Properties of Cermets and Porous Materials 171
S. Nazare, G. Ondracek, and F. ThUmmler
. . . . .
Porous Stainless Steel - The Unique Filter Medium • 187
N. Nicholaus and R. Ray
About-Nitrides and Carbonitrides and Nitride-Based
Cemented Hard Alloys • • • • • • • • • • 201
R. Kieffer, P. Ettmayer, and M. Freudhofmeier
Composition and Properties of the Binder Metal in
Cobalt Bonded Tungsten Carbide •••• 215
• • • • 0 0
O. RUdiger, D. Hirschfeld, A. Hoffmann,
J. Kolaska, G. Ostermann, and J. Willbrand
High-Strength Tungsten Carbides • • • • • • • • 225
D. Moskowitz, M. J. Ford, and M. Humenik, Jr.
Physical Properties of Monocarbides of Zirconium, Niobium,
and Their Alloys in Homogeneity Range • • • • • •• 235
G. S. Upadhyaya and G. V. Samsonov
TZM Molybdenum Alloy Via P/M 259
• • • • • • • • • 0 •
L. P. Clare and A. J. Vazquez
The Fabrication of Two Phase Alloys in the
Ruthenium-Gold-Palladium System • 273
R. Savage and V. A. Tracey
CONTENTS vii
OXIDES AND NUCLEAR MATERIALS
Reduced Microgels - A New Form of Powdered Metals
and Metal Oxides • • • • • • • • 289
R. H. Lindquist
The Density of Coextruded Metal Cladded Rod Core
as Function of Cartridge Density and
Core Length • • • • • • • • • • • • • 299
W. Rutkowski, W. Szteke, and M. Wieczorkowski
The Influence of Powder Characteristics on Process
and Product Parameters of Uranium Dioxide 311
U. Runfors
Matrix Hardening in Dispersion Strengthened Powder
Products •...•..•.•••• 339
0 0 •
N. Hansen and H. Lilholt
P/M PROPERTIES AND TESTING
Characterization of Commercial Metal Powders
with Scanning Electron Microscope • 369
Hung-Chi Chao
Gamma Ray Density Gauging • • • • • 387
J. E. Hoel and T. W. Novitsky
Point Density Measurement and Flaw Detection in
P/M Green Compacts ••••••••• 395
• • • • 0 • •
I. Hawkes and C. W. Spehrley, Jr.
Test Procedure for the Determination of the
Corrosion Resistance of Sintered Iron
and Bronze Parts •••••••••• 413
A. E. Kindler
The Effect of Material Characteristics on the . . . . . . .
Compaction Behaviour of Metal Powders 423
J. L. Brackpool
The Effect of Presintering on the Dimensional Change
of Iron Powder Compacts • • • • • • • • • • • • •• 437
T. Krantz
Sintered and Heat Treated 4640 Steel 453
• • • • • • • • 0 • • •
F. W. Heck
CONTENTS
viii
Characterization of the Microstructure of a
Sintered 4640 Steel • • • • • • • • • • • • • • •• 471
J. J. Fischer and F. W. Heck
A New Approach for the Production of Maraging
Steel plM Parts • • • • • • • • 481
J. S. Hirschhorn and D. A. Westphal
INDEX • • • • • 491
0 • • • • • • • • 0 • • • • • • • • • • • ••
NEW P/M MATERIALS
PROPERTIES OF HOT PRESSED TITANIUM ALLOY
POWDERS FOR CRYOGENIC APPLICATIONS *
Gerald I. Friedman
Whittaker Corporation/Nuclear Metals Division
John M. Kazaroff
NASA/Lewis Research Center
INTRODUCTION
This program was performed to evaluate the strength and
toughness of hot pressed titanium alloy powders at room and at
cryogenic temperatures. Our objective was to determine how the
mechanical properties of solid bodies formed from powder would
compare with wrought specimens of the same size and with the same
chemical analysis. Such information would prove valuable in
determining the usefulness of powder techniques for the fabrication
of parts that are difficult or costly to make by conventional
techniques. The basis for this expectation was the belief that
the powder process would produce fine-grained structures possessing
a high degree of chemical homogeneity and property uniformity.
In the first part of the program titanium alloy powders made
by five different techniques were compared. Following an evalua
tion based on powder and solid characteristics, one powder type was
selected for use in the balance of the program. Rectangular blocks
6 x 6 x 3 inches of both alloys were pressed, and samples cut from
the blocks were tested at room temperature, -320°F and -423°F.
TECHNICAL PROGRAM
Ti-6Al-4V and Ti-5Al-2.5Sn ELI grade (Extra-Low Interstitial
Content) forged bars were purchased by Nuclear Metals. Sections
*This work was performed for NASA/Lewis Research Center under
Contract NAS 3-10301.
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