低熱膨脹鑄鐵之冶金特性研究

A Study on the Metallurgical Characteristics of Low Thermal Expansion Cast Irons

林明山(Ming-shan Lin)

指導教授 ： 潘永寧

國立臺灣大學/工學院/機械工程學研究所/博士(2005年)

https://doi.org/10.6342/NTU.2005.10121

摘要

中 文 摘 要

Invar合金中因C、Si含量低(C<0.2%，Si<0.4%)，因此有較低的熱膨脹係數，約為(1~2)x10-6/oC(或(0.56~1.1)x10-6/oF)，但鑄造性及切削性較差。傳統高Ni低熱膨脹鑄鐵的C、Si含量(重量百分比2%

關鍵字

切削性 ； 冒口設計 ； 熱分析 ； 均質化熱處理 ； 膨脹係數 ； 鑄鐵

並列摘要

Abstract

The thermal expansion coefficients of Invar are quite low, normally at (1~2)x10-6/oC(or(0.56~1.1)x10-6/oF). However, due to the low C and Si contents in the alloys (C<0.2%，Si<0.4%), and the austenitic phase in the microstructure, Invar experiences relatively poor machinability and castability. The high-Ni (34~37%) austenitic cast irons, due to their relatively high C and Si contents in the alloys (2%

並列關鍵字

Riser design ； Machinability ； Cast iron ； Expansion coefficient ； Thermal analysis ； Homogenizing heat treatment

參考文獻

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16. E. N. Pan, S. P. Chen, C. R. Loper, Jr., “Influence of Metallurgical Parameters on Low Thermal Expansion Austenitic Cast Irons,” AFS Trans., Vol. 101, 1993, pp. 293-303.