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Dynamic Shear Behaviour of Unweldable Aluminum Scandium (Al Sc) Alloy

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Figure

Fig. 1(a) Optical microstructure of undeformed unweldable Al-Sc alloyafter solution and aging treatments; (b) Profile and dimensions of testspecimen (units: mm).
Figure 3(b) shows the variation of the fracture shear stress
Table 1Yield Stress (�y), strength coefficient (B), and work hardeningcoefficient (n) of unweldable Al-Sc alloy deformed at different temper-atures and strain rates.
Fig. 4(a) Variation of logarithmic yield stress with logarithmic strain rate;(b) Relationship between shear stress and strain rate for specimensdeformed at strains of 0.1 and 0.2 under various temperatures; (c)Variation of strain rate sensitivity with shear strain as function oftemperature and strain rate range.
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