DC pole | Wartość | Język |
dc.contributor.author | Morawiec, Henryk | - |
dc.date.accessioned | 2018-05-23T05:51:08Z | - |
dc.date.available | 2018-05-23T05:51:08Z | - |
dc.date.issued | 2014 | - |
dc.identifier.isbn | 9788322622056 | - |
dc.identifier.isbn | 9788380121706 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/3858 | - |
dc.description.abstract | Shape memory alloys can be ascribed to a relatively new group of functional materials.
Shape memory effect of these alloys is closely related to the reversible, thermoelastic martensitic
transformation, which means structural changes, i.e. reconfiguration of thermally activated atoms
or by applied external stress, or else by magnetic field.
Shape memory is the material’s capacity to take on two different programmed shapes as
a result of phase change taking place. Two different shapes are tightly connected with the structure
change of these phases when warming up and cooling down.
The book constitutes a synthesis of numerous publications, and presents an evolutionary
process of knowledge development in this field of study. Hence, it provides a relatively big number
of quoted sources illustrating a laborious way to understand complex processes and phenomena
taking place in shape memory alloys, especially in those with a magnetic shape memory.
The book is also above average thanks to exposing practical information. It concerns not
only information on the technology of making alloys, but above all a description of procedures
and optimal parameters of a thermo-mechanic processing to reach the most beneficial qualities of
shape memory alloys.
The first chapter of the book allows for obtaining knowledge within the scope of a martensitic
transformation and martensite structure, understanding their nature, as well as the influence on
the effects of shape memory accompanying a reversible martensitic change.
The second chapter presents the phonomenon of shape memory, putting emphasis on oneand
two-way shape memory and superelasticity connected with the transformation induced by
external stress. This chapter also discusses the possibility of strain increase in the one-way shape
memory effect, with the use of specially privileged crystallographic grain oriantation, i.e. the texture
and anisotropy of the properties related to it.
The next chapter deals with NiTi alloys and begins with the discussion of the phase equilibrium
system and the processes of alloy production and modification, with particular emphasis on
the processes of structure and microstructure shaping through dislocation reconfiguration in the
process of recovery and their annihilation, grain size control by way of annealing temperature, or
the use of the aging process for the precipitation of Ni4Ti3 particles which are coherent with the
matrix in the alloys with increased nickel content, which give real possibilities of controlling the
properties of alloys and implants. The chapter also presents the problem of bio-compatibility and
resistence to pitting corrosion importat for medical implans. It also characterizes the layers passivated
in an autoclave, which have a characteristic amorphous structure, have a high breakthrough
potencial (1200 mV), are thin ( 4 nm) and do not show cracks as the result of strain accompanying
the shape memory effec.The fourth chapter concerns alloys on the copper matrix characterised by a bigger complexity
of structure and phase content, at the same time, creating big possibilities of controlling their
qualities.
The issue of high-temperature alloys characterised by Af > 120°C is presented in chapter
five. The very alloys promise greater application on an industrial scale in constructions of operators
regulating motor work in cars and planes.
Chapter six covers ferromagnetic alloys in which the shape change is a result of imposing
the field of pressures and a magnetic field on. The majority of alloys within this group bases on
Heusler’s phases while a classic example are alloys close to Ni2MnGa.
The last two chapters include the examples of using classical alloys in technology and medicine.
When it comes to conventionalized applications in technology, the examples of separable
pieces of hydraulic systems in planes, as well as robot holders, thermo-regulators, thermal engines
and systems deadening vibrations were given. As regards the latest solutions, the applications
of anti-seismic constructions of bridges, and the attempts to deaden the engines of gas turbines in
planes were presented.
Futhermore, chapter eight discusses all the staples used to join broken bones and a surgery
backbone treatment. Yet another group of implants in question constitutes self-expanded stents
and Amplatzer’s implant used to seal the loss of the interatrial and interventricular septum.
The author’s intention, apart from explaining the nature of the phenomena of shape memory
in metals, was to stimulate constructors’ imagination to use their unique properties, and encourage
potential equipment producers to apply solutions based on these materials.
The book may also be useful in doctoral programs and student education at faculties connected
with engineering and materials science. Taking into account the complexity of the phenomena
of shape memory, some fragments of the book were written taking into consideration the
requirements of a didactic usefulness at the same time. | pl_PL |
dc.language.iso | pl | pl_PL |
dc.publisher | Wydawnictwo Uniwersytetu Śląskiego | pl_PL |
dc.rights | Uznanie autorstwa-Użycie niekomercyjne-Bez utworów zależnych 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/pl/ | * |
dc.subject | przemiany martenzytyczne | pl_PL |
dc.subject | stopy z pamięcią kształtu | pl_PL |
dc.subject | metaloznawstwo | pl_PL |
dc.title | Metale z pamięcią kształtu i ich zastosowanie | pl_PL |
dc.type | info:eu-repo/semantics/book | pl_PL |
Pojawia się w kolekcji: | Książki/rozdziały (WNŚiT)
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