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Improvement of Mechanical Properties of Powder Metallurgical NiTi Shape Memory Alloys
Author(s) -
Mentz J.,
Bram M.,
Buchkremer H. P.,
Stöver D.
Publication year - 2006
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200500258
Subject(s) - materials science , nickel titanium , shape memory alloy , metallurgy , metal injection molding , deformation (meteorology) , fracture (geology) , impurity , elongation , composite material , ultimate tensile strength , sintering , chemistry , organic chemistry
An improvement of the mechanical properties of powder metallurgically produced NiTi shape memory alloys was attained by reducing the impurity contents of oxygen and carbon. Elongation at fracture was increased to 16.5 % for Hot Isostatically Pressed (HIP), as well as for net‐shape samples produced by Metal Injection Moulding (MIM) with plastic deformation before fracture. Furthermore, an enlargement of the utilisable strain of the shape memory effect itself was detected.