Materials for high temperature power generation and process plant applications
Materials Congress '98 - Frontiers in Materials Science and Technology, organised by the Institute of Materials, was held from the 6-8 April 1998 at the Royal Agricultural College, Cirencester. This .event, which was attended by more than 450 delegates from academia and industry, consisted o...
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| Format: | Conference Proceeding |
| Language: | English |
| Published: |
I0M Communications Ltd
2020
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| Subjects: | |
| Online Access: | http://dspace.uniten.edu.my/jspui/handle/123456789/13929 |
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| Summary: | Materials Congress '98 - Frontiers in Materials Science and Technology, organised
by the Institute of Materials, was held from the 6-8 April 1998 at the Royal
Agricultural College, Cirencester. This .event, which was attended by more than
450 delegates from academia and industry, consisted of technical sessions dealing
with materials issues involving rubbers, polymers, composites, ceramics, ferrous
and nonferrous metals and alloys in applications ranging from medical prosthesis
to advanced power plant engineering.
These proceedings contain the ten most important papers presented in the
session of the Congress concerned with materials for high temperature power
plant and process plant applications organised by the Institute of Materials High
Temperature Materials Performance Committee. The selected papers are largely
in the form of critical reviews which not only highlight the development of
materials to meet specific applications but also comment on solutions used for
both current and future applications. The papers presented by Thornton and
Fleming et ale are concerned with and highlight the problems associated with the
selection of materials and manufacturing processes for critical components for
large steam turbines and boiler plant where design lives in excess of 200 000
hours are now required at stresses of up to 300 bar and temperatures approaching
600°C. Starr's paper critically reviews materials for advanced heat
exchanger applications such as those used in indirectly fired and recuperative gas
turbines, fluidised bed combustion, coal gasification and waste incineration
systems, where the effects of corrosion often severely life-limits components. The
paper by Barnes et ale considers the key issues concerned with the welding and
fabrication of key components for advanced power plant particularly in terms of
their properties and expected service performance. Material integrity is of
paramount importance in critical components such as welded steam chests, pipework
and large rotors for large turbine generator applications and the material
considerations concerned with defect tolerance for such applications is critically
reviewed in the paper by Holdsworth. A review of typical problems encountered
during the operation of high temperature plant is presented in the paper by
Townsend while the extensive review by Bhadeshia et ale considers present assessment
procedures for the life extension of power plant components. The important
role of surface engineering in the reliable operation of all high
temperature power and process plant is reviewed in the paper by Nicholls and
Rickerby. Significant developments are still continuing in this field with 'designed
surfaces' likely to become a routine part of design procedures for many future
component and plant applications. Surface engineering already plays a significant
part in ensuring that many gas turbine components such as blades,
combustion cans and other hot gas parts of the system achieve their planned
design lives. The paper by Piearcey considers these problems as well as others
associated with the use of poor quality fuels and marine environments with the
effects on the performance of high temperature alloys in industrial gas turbine
plant. Finally Dominy et al. present an engineer's view in a review of the application
and role of ceramics and CMCs in modern aero gas turbines. These
reviews not only discuss the evolution of advanced materials for high temperature
power and process plant applications but also indicate the developments in
materials which must take place to achieve the higher efficiency and environmentally
acceptable plant for the 21st Century and beyond. |
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