Effect of Primary Microstructures during Training Producers on TWSME in NiTi Alloys

سال انتشار: 1391
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 665

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شناسه ملی سند علمی:

JR_IJE-25-4_021

تاریخ نمایه سازی: 17 خرداد 1393

چکیده مقاله:

The influence of the martensitic, martensitic+austenitic and austenitic structures during bending training on two-way shape memory effect (TWSME) in Ni-50.8 at %Ti and Ni-49.9 at %Ti alloys hasbeen studied. In addition, the effect of pre-strain, plastic strain, training cycle and training temperatureon the TWSME has been investigated. Specimens were trained in martensitic, martensitic+austenitic and austenitic states with bending deformation. The results showed that in martensitic state, TWSME was more than the other states. Although the number of training cycles in martensitic state(10-15cycle) were less than the other training methods (15-25 cycle), the obtained optimum pre-strain in martensitic state (16%) was more than other training methods (12%). In addition, it was shown that with increasing the training temperature in austenitic state, TWSME decrease

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نویسندگان

z Balak

Department of Materials and Metallurgical Engineering, Ahwaz Branch, Islamic Azad University, Ahwaz, Iran

s.m abbasi

Metalic Material Research Center, MAU, Tehran, Iran