Effect of austenitising temperature on tensile properties of Cu–Ni austempered ductile iron
作者:
GrechM.,
YoungJ. M.,
期刊:
Materials Science and Technology
(Taylor Available online 1990)
卷期:
Volume 6,
issue 5
页码: 415-421
ISSN:0267-0836
年代: 1990
DOI:10.1179/mst.1990.6.5.415
出版商: Taylor&Francis
数据来源: Taylor
摘要:
AbstractThe effect of austenitising temperature on the microstructure, mechanical properties, and dimensional stability of a spheroidal graphite iron containing copper and nickel has been investigated. It was found that as the temperature increased the amount of carbon taken into solution by the austenite increased thus reducing the driving force of the original austenite to bainitic ferrite and high carbon austenite. As a consequence, the amount of retained austenite increased, but its stability decreased. This placed an upper limit on the austenitising temperature and on the amount of retained austenite permissible. All properties other than hardness showed maximum values after austenitising at 900°C. It was also found that increasing the solution treatment temperature increased the dimensional stability.MST/1116
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