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Solouki, Hanieh, Borhani, Ehsan, Toroghinezhad, Mohammadreza. (1394). The effect of temperature and strain rate on elongation to failure in nanostructured Al-0.2wt% Zr alloy fabricated by ARB process. , 48(2), 125-132. doi: 10.7508/jufgnsm.2015.02.007
Hanieh Solouki; Ehsan Borhani; Mohammadreza Toroghinezhad. "The effect of temperature and strain rate on elongation to failure in nanostructured Al-0.2wt% Zr alloy fabricated by ARB process". , 48, 2, 1394, 125-132. doi: 10.7508/jufgnsm.2015.02.007
Solouki, Hanieh, Borhani, Ehsan, Toroghinezhad, Mohammadreza. (1394). 'The effect of temperature and strain rate on elongation to failure in nanostructured Al-0.2wt% Zr alloy fabricated by ARB process', , 48(2), pp. 125-132. doi: 10.7508/jufgnsm.2015.02.007
Solouki, Hanieh, Borhani, Ehsan, Toroghinezhad, Mohammadreza. The effect of temperature and strain rate on elongation to failure in nanostructured Al-0.2wt% Zr alloy fabricated by ARB process. , 1394; 48(2): 125-132. doi: 10.7508/jufgnsm.2015.02.007

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

Journal of Ultrafine Grained and Nanostructured Materials
مقاله 7، دوره 48، شماره 2، اسفند 2015، صفحه 125-132    اصل مقاله (892.84 K)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.7508/jufgnsm.2015.02.007
نویسندگان
Hanieh Solouki1؛ Ehsan Borhani* 1؛ Mohammadreza Toroghinezhad2
1Department of Nano Technology, Nano Materials Engineering Group, Semnan University, Semnan, Iran
2Department of Material Engineering, Isfahan University of Technology, Isfahan, Iran
چکیده
A nano/ultra-fine grain Al-0.2wt% Zr alloy was produced by accumulated roll bonding (ARB) process
after 10 cycles. The fraction of high angle grain boundaries increased from 8% to 65.4% during 10
passes during ARB process. This alloy was subjected to tensile test at different temperatures (523,573
and 623 K) and strain rates (0.1 and 0.01 s-1). The optimum condition of temperature and strain rate of
623k 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 higher temperature were deeper, bigger, and longer than
low temperature. Because of presenting the superplasticity character at elevated temperature and
higher strain rate, there was no evidence of necking after failure.
کلیدواژه‌ها
elongations؛ strain rates؛ temperature؛ tensile test؛ ultra-fine grain
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