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مقالات فارسیISIکنفرانسهاژورنالها

Study of the Precipitation of Ni4Ti3 Particles During Aging of Ni-rich NiTi Shape Memory Wires by sing in-Situ Electrical Resistance Measurement

محل انتشار: دوازدهمین کنفرانس ملی مهندسی ساخت و تولید ایران
سال انتشار: 1390
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 1,136

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لینک ثابت به این مقاله:
https://civilica.com/doc/212522

شناسه ملی سند علمی:

ICME12_013

تاریخ نمایه سازی: 25 شهریور 1392

چکیده مقاله:

Electrical resistance variations of Ni50.9Ti49.1 shape memory wires were studied during aging at different temperatures via in-situ electrical resistance measurments. The results showed that during aging treatment, the cyclic behavior observed in electrical resistance variations which could be related to precipitation process. The evaluation of transition temperatures has been studied after aging by differential scanning calorimetry (DSC) analysis. Microstructural explorations have been performed by optical microscopy .The results showed that depending on stress level around precipitates, two, three or four-step martensitic transformations could be observed in DSC curves.

کلیدواژه ها:

Aging treatment ، Electrical resistance ، NiTi shape memory alloys ، Differential scanning calorimetry (DSC)

نویسندگان

K Kazemi-Choobi

Sahand University of Technology, Faculty of Materials Engineering, Research Center for Advanced Materials and Mineral Processing, Tabriz Iran

J Khalil-Allafi

Sahand University of Technology, Faculty of Materials Engineering, Research Center for Advanced Materials and Mineral Processing, Tabriz Iran

V Abbasi-Chianeh

Sahand University of Technology, Faculty of Materials Engineering, Research Center for Advanced Materials and Mineral Processing, Tabriz, Iran

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