Heterogenity of Microstructure Evolution in NiTi (50 at% Ni) Alloy Severely Deformed by High Pressure Torsion

R. Singh*, J. Fiebig, S. Ostendorp, H. Rösner, E. A. Prokofyev, R. Z. Valiev, S. V. Divinski, G. Wilde

*المؤلف المقابل لهذا العمل

نتاج البحث

1 اقتباس (Scopus)

ملخص

An equiatomic B2 NiTi alloy, severely deformed by high-pressure torsion, was investigated. Nanocrystallization of the as-deformed amorphous matrix has been examined. The formation of internal porosity after long-time annealing was established by the radiotracer technique. Such a porosity prohibited reliable measurements of grain boundary diffusion of the 44Ti tracer in the nanocrystallized NiTi alloy. The percolating porosity does not exist in the as-deformed state of NiTi alloy; its formation was affected by free volume redistribution during nanocrystallites' growth under residual stresses. The atomic force microscopy study reveals a highly modified surface with average roughness of about 50 nm after annealing the samples at 600 K for 7 d.

اللغة الأصليةEnglish
عنوان منشور المضيفSupplemental Proceedings: Materials Fabrication, Properties, Characterization, and Modeling
ناشرJohn Wiley and Sons Inc.
الصفحات147-154
عدد الصفحات8
مستوى الصوت2
رقم المعيار الدولي للكتب (الإلكتروني)9781118062142
رقم المعيار الدولي للكتب (المطبوع)9781118029466
المعرِّفات الرقمية للأشياء
حالة النشرPublished - أبريل 20 2011

ASJC Scopus subject areas

  • ???subjectarea.asjc.2200???
  • ???subjectarea.asjc.2500???

بصمة

أدرس بدقة موضوعات البحث “Heterogenity of Microstructure Evolution in NiTi (50 at% Ni) Alloy Severely Deformed by High Pressure Torsion'. فهما يشكلان معًا بصمة فريدة.

قم بذكر هذا