Study on High Temperature Tensile Strength and Thermal Shock Property of Aluminum-Based Heat Resistant Cast Iron
| Autor: | Hung-Tsai Huang, 黃弘才 |
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| Rok vydání: | 2002 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 90 The objective of this study is to investigate the effects of various graphite morphologies ( flake, compacted/vermicular, spheroidal ) and aluminum contents on the high temperature tensile strength and thermal shock property at different test temperatures of aluminum-based heat resistant cast irons. According to the results of this study, the high temperature tensile strength of aluminum-based heat resistant cast irons with 2.5%Al is greater than with 8%Al at RT、673K、873K、1073K. The order of high temperature tensile strength for different graphite morphologies is spheroidal graphite cast iron＞c / v graphite cast iron＞flake graphite cast iron at any test temperature. As a whole, the thermal shock resistant property of aluminum-based heat resistant cast irons with 2.5%Al is better than with 8%Al. The order of thermal shock resistant property for different graphite morphologies is spheroidal graphite cast iron＞c / v graphite cast iron＞flake graphite cast iron. The order of thermal shock resistant property for the matrix structures is pearlite＞ferrite. Moreover, the order of crack number after rupture for different graphite morphologies is flake graphite cast iron＞c / v graphite cast iron＞spheroidal graphite cast iron. Quality Index of High Temperature Strength Property(QHTSP) is used for evaluating the heat resistance of aluminum-based heat resistant cast iron in this study. Experimental results showed that QHTSP has high accuracy and can be used as important index and reference. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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