Study on the High Temperature Oxidation of René 142 Directionally Solidified Superalloy

碩士 === 義守大學 === 機械與自動化工程學系碩士班 === 98 === High temperature oxidation resistance of turbine blade materials is very important, because turbine blades operated in the long-term high temperature condition can have spallations of surface protective coatings, in this case turbine blades need to rely on th...

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Main Authors: Chun-Yu Lin, 林俊宇
Other Authors: Chen-Ming Kuo
Format: Others
Language:zh-TW
Published: 2010
Online Access:http://ndltd.ncl.edu.tw/handle/97453477822107989609
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spelling ndltd-TW-098ISU056890412015-10-13T18:25:52Z http://ndltd.ncl.edu.tw/handle/97453477822107989609 Study on the High Temperature Oxidation of René 142 Directionally Solidified Superalloy René142單方向凝固超合金高溫氧化之研究 Chun-Yu Lin 林俊宇 碩士 義守大學 機械與自動化工程學系碩士班 98 High temperature oxidation resistance of turbine blade materials is very important, because turbine blades operated in the long-term high temperature condition can have spallations of surface protective coatings, in this case turbine blades need to rely on the oxidation resistance of the material itself. In particular the recyclic oxidation of turbine blade materials is of particular importance to address the effect of thermal fatigue. The objective of this research is to discuss the difference of the oxidation resistance between directional solidification and conventional cast of René 142 superalloy. Firstly, cyclic oxidation and isothermal oxidation tests have been conducted by observing mass change and oxide grow. In addition, an interrupted creep testpiece subjected to rejuvenation heat treatment has been tested for oxidation behaviour. In summary, the oxidation resistance of directional solidified samples performed better than conventional cast of René 142 superalloy in the 1150℃ high temperature oxidation test. Oxides of directional solidification samples are more continuous and compact comparing to that of conventional cast. Oxide structure of René 142 superalloy consists of mainly Al2O3 and HfO2 with internal oxidations. Chen-Ming Kuo An-Chou Yeh 郭振明 葉安洲 2010 學位論文 ; thesis 89 zh-TW
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language zh-TW
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description 碩士 === 義守大學 === 機械與自動化工程學系碩士班 === 98 === High temperature oxidation resistance of turbine blade materials is very important, because turbine blades operated in the long-term high temperature condition can have spallations of surface protective coatings, in this case turbine blades need to rely on the oxidation resistance of the material itself. In particular the recyclic oxidation of turbine blade materials is of particular importance to address the effect of thermal fatigue. The objective of this research is to discuss the difference of the oxidation resistance between directional solidification and conventional cast of René 142 superalloy. Firstly, cyclic oxidation and isothermal oxidation tests have been conducted by observing mass change and oxide grow. In addition, an interrupted creep testpiece subjected to rejuvenation heat treatment has been tested for oxidation behaviour. In summary, the oxidation resistance of directional solidified samples performed better than conventional cast of René 142 superalloy in the 1150℃ high temperature oxidation test. Oxides of directional solidification samples are more continuous and compact comparing to that of conventional cast. Oxide structure of René 142 superalloy consists of mainly Al2O3 and HfO2 with internal oxidations.
author2 Chen-Ming Kuo
author_facet Chen-Ming Kuo
Chun-Yu Lin
林俊宇
author Chun-Yu Lin
林俊宇
spellingShingle Chun-Yu Lin
林俊宇
Study on the High Temperature Oxidation of René 142 Directionally Solidified Superalloy
author_sort Chun-Yu Lin
title Study on the High Temperature Oxidation of René 142 Directionally Solidified Superalloy
title_short Study on the High Temperature Oxidation of René 142 Directionally Solidified Superalloy
title_full Study on the High Temperature Oxidation of René 142 Directionally Solidified Superalloy
title_fullStr Study on the High Temperature Oxidation of René 142 Directionally Solidified Superalloy
title_full_unstemmed Study on the High Temperature Oxidation of René 142 Directionally Solidified Superalloy
title_sort study on the high temperature oxidation of rené 142 directionally solidified superalloy
publishDate 2010
url http://ndltd.ncl.edu.tw/handle/97453477822107989609
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