Effect of Heat Treatment on the Microstructure and Mechanical Properties of Rapidly Solidified 7091 P/M Aluminium Alloy / Einfluß der Wärmebehandlung auf Gefüge und mechanische Eigenschaften einer schnellerstarrten P/M-Aluminiumlegierung vom Typ 7091

1993 ◽  
Vol 30 (4) ◽  
pp. 186-199
Author(s):  
H. N. Azari ◽  
G. S. Murty ◽  
G. S. Upadhyaya
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Aluminium Alloy ◽  
Mechanische Eigenschaften ◽  
Microstructure And Mechanical Properties ◽  
Rapidly Solidified

The Effect of Heat Treatment on Static and Dynamic Mechanical Properties of Rapidly Solidified and Plastically Consolidated RS442 Aluminium Alloy

2015 ◽  
Vol 641 ◽  
pp. 17-23
Author(s):  
Maciej Motyka ◽  
Tomasz Tokarski ◽  
Waldemar Ziaja ◽  
Mateusz Wedrychowicz
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Aluminium Alloy ◽  
Bending Strength ◽  
Fatigue Behaviour ◽  
Extrusion Process ◽  
Dynamic Mechanical Properties ◽  
Static Mechanical ◽  
Rapidly Solidified ◽  
Static Mechanical Properties

Ultra-fine grained metallic materials are characterized by higher mechanical properties comparing with their conventional equivalents. However increase in strength under static load is not always accompanied by improved fatigue behaviour. Previous investigations on submicrocrystalline RS442 aluminium alloy produced by plastic consolidation of rapidly solidified flakes in the extrusion process revealed increase in its high cycle fatigue bending strength caused by annealing at 450°C. The aim of present studies was to evaluate the influence of heat treatment – also precipitation hardening – on static mechanical properties (hardness, tensile and yield strength) and fatigue strength of the alloy determined in high cycle stress controlled bending tests. Correlation between microstructure, static mechanical properties and fatigue behaviour was analyzed too.

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