The effect of temperature and strain rate on elongation to failure in nanostructured Al-0.2wt% Zr alloy fabricated by ARB process

The effect of temperature and strain rate on elongation to failure in nanostructured Al-0.2wt% Zr alloy fabricated by ARB process

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A nano/ultra-fine grain Al-0.2wt% Zr alloy was produced by accumulated roll bonding (ARB) processafter 10 cycles.The fraction of high angle grain boundaries increased from 8% to 65.4% Shirt during 10passes during ARB process.This alloy was subjected to tensile test at different temperatures (523,573and 623 K) and strain rates (0.

1 and 0.01 s-1).The optimum condition of temperature and strain rate of623k and 0.01s-1 was achieved for maximum elongation to failure, leading to 100% elongation,although maximum elongation was achieved at higher strain rate and maximum chosen temperature.In fracture surfaces after the test, dimples in Bike Accessories - Bags higher temperature were deeper, bigger, and longer thanlow temperature.

Because of presenting the superplasticity character at elevated temperature andhigher strain rate, there was no evidence of necking after failure.