Kwinking as the plastic forming mechanism of B19<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si80.svg" display="inline" id="d1e1631"><mml:msup><mml:mrow /><mml:mrow><mml:mo>′</mml:mo></mml:mrow></mml:msup></mml:math> NiTi martensite

Martensite modulus dilemma in monoclinic NiTi-theory and experiments

Article history: Received 26 February 2014 Received in final revised form 30 April 2014 Available online 4 June 2014

Mechanism of misorientation development within coalesced martensite

Coarse crystals of martensite can form by the coalescence of thin individual platelets of martensite under appropriate circumstances. Although these coarse grains are essentially single crystals, there exist significant orientation gradients across their dimensions. It is demonstrated that these gradients arise because of the plasticity induced in austenite due to the transformation strain asso...

Formation Mechanism and Enthalpy of Mixing of Nanocrystalline NiTi Intermetallic during Mechanical Alloying

Phase transformation and deformation behavior of NiTi-Nb eutectic joined NiTi wires

NiTi wires were brazed together via eutectic reaction between NiTi and Nb powder deposited at the wire contact region. Phase transformation and deformation behavior of the NiTi-Nb eutectic microstructure were investigated using transmission electron microscopy (TEM) and cyclic loading-unloading tests. Results show that R phase and B19' martensite transformation are induced by plastic deformatio...

Debris Flow as a Mechanism for Forming Martian Gullies

The current low temperatures and pressures at the martian surface are not conducive to the stability of liquid water; hence the discovery of recently active, fluvial-like gullies [1, 2] presents an apparent paradox: how can these fluvial landforms have occurred if water is not stable at the surface? To approach this problem we have compared the morphometric properties of gullies in various sett...