Impact Tensile Stress–strain Characteristics of Wrought Magnesium Alloys
- 18 November 2003
- Vol. 39 (4) , 167-175
- https://doi.org/10.1046/j.1475-1305.2003.00086.x
Abstract
Abstract: Impact tensile properties of three different wrought magnesium alloys (AZ31B‐F, AZ61A‐F and ZK60A‐T5) are evaluated using the split Hopkinson bar. Reliable tensile stress–strain data up to fracture in the extrusion direction at strain rates of nearly 1000 s−1 are presented and compared with those at quasi‐static and medium rates of strain obtained on an Instron testing machine. The effect of strain rate on the tensile strength, elongation at fracture and absorbed energy is examined in detail. It is demonstrated that the tensile strength increases with increasing strain rate, and the strain‐rate dependence of elongation at fracture and absorbed energy varies, depending on the magnesium alloys tested. The limitations of the test technique are discussed.Keywords
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