Interparticle movement and the mechanical behavior of extruded powder aluminum at elevated temperature

Woods, T. O. ; Berghaus, D. G. ; Peacock, H. B.
Springer
Published 1998
ISSN:
1741-2765
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract This paper proposes a model and a mechanism for explaining the mechanical behavior of extruded powder aluminum at elevated temperature. This behavior is significantly different from that of ingot-cast and drawn aluminum which is subjected to the same tests. Powder aluminum exhibits a strain-softening effect which is evident in a decrease of stress with increasing strain in uniaxial test specimens when the experiment proceeds into the postyield region. Similar behavior is observed in the shear response during biaxial tension-torsion loading. For these tests, the shear stress is additionally reduced with increased axial extension. A model and mechanism are proposed, based on the relative motion of the extruded aluminum particles, to explain this effect. Equations are derived which relate the axial and shear stresses and strains. These equations are fitted to data obtained in a matrix of experiments, which include combined loadings from uniaxial tension to simple shear. Results are presented graphically and are in good agreement with the proposed models.
Type of Medium:
Electronic Resource
URL:
_version_ 1798297652649000960
autor Woods, T. O.
Berghaus, D. G.
Peacock, H. B.
autorsonst Woods, T. O.
Berghaus, D. G.
Peacock, H. B.
book_url http://dx.doi.org/10.1007/BF02321653
datenlieferant nat_lic_papers
hauptsatz hsatz_simple
identnr NLM190013494
issn 1741-2765
journal_name Experimental mechanics
materialart 1
notes Abstract This paper proposes a model and a mechanism for explaining the mechanical behavior of extruded powder aluminum at elevated temperature. This behavior is significantly different from that of ingot-cast and drawn aluminum which is subjected to the same tests. Powder aluminum exhibits a strain-softening effect which is evident in a decrease of stress with increasing strain in uniaxial test specimens when the experiment proceeds into the postyield region. Similar behavior is observed in the shear response during biaxial tension-torsion loading. For these tests, the shear stress is additionally reduced with increased axial extension. A model and mechanism are proposed, based on the relative motion of the extruded aluminum particles, to explain this effect. Equations are derived which relate the axial and shear stresses and strains. These equations are fitted to data obtained in a matrix of experiments, which include combined loadings from uniaxial tension to simple shear. Results are presented graphically and are in good agreement with the proposed models.
package_name Springer
publikationsjahr_anzeige 1998
publikationsjahr_facette 1998
publikationsjahr_intervall 8004:1995-1999
publikationsjahr_sort 1998
publisher Springer
reference 38 (1998), S. 110-115
search_space articles
shingle_author_1 Woods, T. O.
Berghaus, D. G.
Peacock, H. B.
shingle_author_2 Woods, T. O.
Berghaus, D. G.
Peacock, H. B.
shingle_author_3 Woods, T. O.
Berghaus, D. G.
Peacock, H. B.
shingle_author_4 Woods, T. O.
Berghaus, D. G.
Peacock, H. B.
shingle_catch_all_1 Woods, T. O.
Berghaus, D. G.
Peacock, H. B.
Interparticle movement and the mechanical behavior of extruded powder aluminum at elevated temperature
Abstract This paper proposes a model and a mechanism for explaining the mechanical behavior of extruded powder aluminum at elevated temperature. This behavior is significantly different from that of ingot-cast and drawn aluminum which is subjected to the same tests. Powder aluminum exhibits a strain-softening effect which is evident in a decrease of stress with increasing strain in uniaxial test specimens when the experiment proceeds into the postyield region. Similar behavior is observed in the shear response during biaxial tension-torsion loading. For these tests, the shear stress is additionally reduced with increased axial extension. A model and mechanism are proposed, based on the relative motion of the extruded aluminum particles, to explain this effect. Equations are derived which relate the axial and shear stresses and strains. These equations are fitted to data obtained in a matrix of experiments, which include combined loadings from uniaxial tension to simple shear. Results are presented graphically and are in good agreement with the proposed models.
1741-2765
17412765
Springer
shingle_catch_all_2 Woods, T. O.
Berghaus, D. G.
Peacock, H. B.
Interparticle movement and the mechanical behavior of extruded powder aluminum at elevated temperature
Abstract This paper proposes a model and a mechanism for explaining the mechanical behavior of extruded powder aluminum at elevated temperature. This behavior is significantly different from that of ingot-cast and drawn aluminum which is subjected to the same tests. Powder aluminum exhibits a strain-softening effect which is evident in a decrease of stress with increasing strain in uniaxial test specimens when the experiment proceeds into the postyield region. Similar behavior is observed in the shear response during biaxial tension-torsion loading. For these tests, the shear stress is additionally reduced with increased axial extension. A model and mechanism are proposed, based on the relative motion of the extruded aluminum particles, to explain this effect. Equations are derived which relate the axial and shear stresses and strains. These equations are fitted to data obtained in a matrix of experiments, which include combined loadings from uniaxial tension to simple shear. Results are presented graphically and are in good agreement with the proposed models.
1741-2765
17412765
Springer
shingle_catch_all_3 Woods, T. O.
Berghaus, D. G.
Peacock, H. B.
Interparticle movement and the mechanical behavior of extruded powder aluminum at elevated temperature
Abstract This paper proposes a model and a mechanism for explaining the mechanical behavior of extruded powder aluminum at elevated temperature. This behavior is significantly different from that of ingot-cast and drawn aluminum which is subjected to the same tests. Powder aluminum exhibits a strain-softening effect which is evident in a decrease of stress with increasing strain in uniaxial test specimens when the experiment proceeds into the postyield region. Similar behavior is observed in the shear response during biaxial tension-torsion loading. For these tests, the shear stress is additionally reduced with increased axial extension. A model and mechanism are proposed, based on the relative motion of the extruded aluminum particles, to explain this effect. Equations are derived which relate the axial and shear stresses and strains. These equations are fitted to data obtained in a matrix of experiments, which include combined loadings from uniaxial tension to simple shear. Results are presented graphically and are in good agreement with the proposed models.
1741-2765
17412765
Springer
shingle_catch_all_4 Woods, T. O.
Berghaus, D. G.
Peacock, H. B.
Interparticle movement and the mechanical behavior of extruded powder aluminum at elevated temperature
Abstract This paper proposes a model and a mechanism for explaining the mechanical behavior of extruded powder aluminum at elevated temperature. This behavior is significantly different from that of ingot-cast and drawn aluminum which is subjected to the same tests. Powder aluminum exhibits a strain-softening effect which is evident in a decrease of stress with increasing strain in uniaxial test specimens when the experiment proceeds into the postyield region. Similar behavior is observed in the shear response during biaxial tension-torsion loading. For these tests, the shear stress is additionally reduced with increased axial extension. A model and mechanism are proposed, based on the relative motion of the extruded aluminum particles, to explain this effect. Equations are derived which relate the axial and shear stresses and strains. These equations are fitted to data obtained in a matrix of experiments, which include combined loadings from uniaxial tension to simple shear. Results are presented graphically and are in good agreement with the proposed models.
1741-2765
17412765
Springer
shingle_title_1 Interparticle movement and the mechanical behavior of extruded powder aluminum at elevated temperature
shingle_title_2 Interparticle movement and the mechanical behavior of extruded powder aluminum at elevated temperature
shingle_title_3 Interparticle movement and the mechanical behavior of extruded powder aluminum at elevated temperature
shingle_title_4 Interparticle movement and the mechanical behavior of extruded powder aluminum at elevated temperature
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titel Interparticle movement and the mechanical behavior of extruded powder aluminum at elevated temperature
titel_suche Interparticle movement and the mechanical behavior of extruded powder aluminum at elevated temperature
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