Automotive Alloys 1999

316 Pages·2014·50.9 MB·English

by  Subodh K. Das

AUTOMOTIVE ALLOYS 1999
Proceedings of the symposium
sponsored by the Light Metals Division of
The Minerals, Metals & Materials Society (TMS)
held during the 1999 TMS Annual Meeting in San Diego, California
February 28 - March 4, 1999
Edited by
Subodh K. Das
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AUTOMOTIVE ALLOYS 1999
TABLE OF CONTENTS
OVERVIEW
IS THE ALUMINUM CAR A FANTASY? 3
F. Katrak, D. Persampieri, M. Loreth, and J. Morton
OVERVIEW OF DOE'S PROGRAMS ON ALUMINUM AND MAGNESIUM
FOR AUTOMOTIVE APPLICATIONS 41
J. Carpenter, S. Diamond, S. Dillich, T. Fitzsimmons, J. Milliken,
and P. Sklad
ALCAR™ — A MODEL FOR HORIZONTAL R&D CONSORTIA 51
H.W. Hayden, G.B. Barthold, and S.K. Das
INNOVATIVE ALUMINUM APPLICATIONS FOR AUTOMOTIVE USE IN
EUROPE 59
D.G. Altenpohl and P. Furrer
MECHANICAL SURFACE TREATMENTS ON HIGH-STRENGTH
MAGNESIUM ALLOYS FOR FATIGUE LIFE IMPROVEMENTS 77
M. Hilpert and L. Wagner
METALLURGICAL CHARACTERISTICS OF CONDUCTIVE HEAT
RESISTANCE SEAM WELDS ON ALUMINUM SHEET 87
J.E. Gould and L.R. Lehman
PRODUCING STEERING WHEEL FRAMES WITH AN AIMg5Si2Mn-
TYPE ALLOY 99
M.C. Wuth, H. Koch, and AJ. Franke
FUNDAMENTAL STUDIES
DUCTILITY AND FORMABILITY OF AUTOMOTIVE Al ALLOY SHEET 113
T.R.G. Kutty, D.S. Wilkinson, J.D. Embury, and D.J. Lloyd
EFFECT OF Si ON THE AGEING BEHAVIOUR AND FORMABILITY OF
ALLOYS BASED ON AA6016 123
S.M. Hirth, GJ. Marshall, S.A. Court, and D.J. Lloyd
V
MICROSTRUCTURAL STRENGTHENING IN Al-Zn-Mg-Cu ALLOYS
USED IN AUTOMOTIVE BUMPERS 133
W.J. Poole, J.A. Saeter, J. Huang, G. Waterloo, and S. Skjervold
THE ROLE OF NATURAL AGING ON SUBSEQUENT PRECIPITATION
DURING THE ARTIFICIAL AGING OF AA6111 ALUMINUM ALLOY 143
S. Esmaeili, D.J. Lloyd, and W.J. Poole
A PROCESS MODEL FOR THE AGE HARDENING OF A 319-TYPE
ALUMINUM ALLOY 153
C.A. Cloutier, P.M. Reeber-Schmanski, J.W. Jones, and J.E. Allison
OBSERVATION OF THROUGH-THICKNESS DEFORMATION BANDS IN
AN Al 6111 ALLOY DEFORMED IN PLANE STRAIN TENSION 161
P.S. Lee, G. Jarvis, A.D. Rollett, H.R. Piehler, and B.L. Adams
TEXTURE EVOLUTION OF A STRIP CAST AA5XXX ALUMINUM ALLOY
DURING ANNEALING 171
Y. Liu, Y.L. Liu, G. Liao, and J.G. Morris
IMPROVEMENT OF HOT DUCTILITY IN Al-Mg BASE ALLOYS CAUSED
BY SMALL AMOUNTS OF ADDITIONAL ELEMENTS 181
K. Horikawa, S. Kuramoto, and M. Kanno
DEVELOPMENTAL STUDIES
OPTIMISED 6XXX ALUMINUM ALLOY SHEET FOR AUTOBODY
OUTER PANELS 193
R. Shahani, D. Daniel, J.C. Ehrstrom, J.L. Hoffmann, and B. Grange
MICROCHEMISTRY AND MICROSTRUCTURAL ASPECTS LEADING TO
STRESS CORROSION CRACKING IN AA508 205
J.S. Vetrano, M.J. Danielson, D.R. Baer, and R.H. Jones
DUCTILITY AND BENDABILITY IN 6000 SERIES AUTOMOTIVE ALLOYS 211
D.J. Lloyd
THE EFFECT OF PRE-AGING ON ARTIFICIAL AGING RESPONSE IN
Al-Mg-Si-Cu ALLOY 6111 223
W.F. Miao and D.E. Laughlin
EFFECTS OF MINOR Sc AND Zr ADDITIONS ON COMMERCIAL
Al-Mg-Mn ALLOYS 239
M.C. Carroll, M.J. Mills, G.S. Daehn, P.I. Gouma, M.F. Savage,
and B.R. Dunbar
vi
AGE HARDENING BEHAVIOR IN A COMMERCIAL 319-TYPE
ALUMINUM ALLOY 247
R. Jahn, W.T. Donlon, and J.E. Allison
APPLICATIONS
THE OPTIMIZED TENSILE AND FATIGUE PROPERTIES OF SEMI-SOLID
357 AND MODIFIED 319 ALUMINUM AUTOMOTIVE PARTS 265
S.C. Bergsma, X. Li, S.P. Paddon, and M.E. Kassner
MECHANISMS OF SOLDERING IN HIGH PRESSURE DIE CASTING OF
AM 1SI-3Cu-1Fe ALLOY 275
Z.W. Chen and M.Z. Jahedi
FICTION STIR WELDING MAGNESIUM ALLOYS 285
G. Kohn, S. Antonsson, and A. Munitz
ROLL FORMING TECHNOLOGY FOR MANUFACTURING AXISYMMETRIC
AUTOMOTIVE COMPONENTS - II: APPLICATION TO FABRICATION OF
Al V96Ts3 AND 295 CAST ALLOY WHEELS 293
C.K. Syn, D.R. Lesuer, T.G. Nieh, H.S. Yang, K.R. Brown,
R.O. Kaibyshev, F. Mushin, R.G. Mudarisov, and V.A. Nezorov
OPTIMISATION OF THE QUALITY OF HIGH PRESSURE DIE CAST
MAGNESIUM ALLOYS 305
A.K. Dahle, S. Sannes, D.H. StJohn, and H. Westengen
HIGH-CYCLE FATIGUE CRACK INITIATION SITE DISTRIBUTION IN
A356.2 315
B. Zhang, D.R. Poirier, and W. Chen
VII

PREFACE
These proceedings of the Symposium, "Automotive Alloys 1999", are
a collection of invited and contributed papers presented at the 1999
TMS Annual Meeting in San Diego, California, March 1-2, 1999.
This symposium is an effort to capture the ongoing research,
development and testing activities for usage of aluminum and
magnesium alloys in automotive application. The information
contained in this publication showcases work at the industry, national
laboratory, and university levels.
I wish to thank all of the authors and TMS staff for their hard work and
consistent effort in producing this volume.
April 26, 1999
Dr. Subodh K. Das
2900 National City Tower
P. O. Box 32860
Louisville, KY 40232
IX