【摘要】 本文研究了耐热铸铁的金相组织与高温性能的关系.试验表明:当石墨由球状变为蠕虫状时,其抗氧化抗生长性能减弱,但变化不太大,当珠光体含量增多时,抗氧化性能变化不大,生长率明显增加.在一定范围内,改变石墨形状及珠光体含量,高温短时抗拉强度变化不大.更多还原

【Abstract】 This paper describes the relations between metallographic structure of heat-resis-tant cast iron and high temperature properties. Tests show that when the graphite changes from nodular form to vermicular form, its anti-oxidization and anti-growth ability is weakened a little, when pearlite increases, the anti-oxidation property has no much change, but the growth rate increase markedly. In certain range to change graphite form and to increase pearlite content, there is no much change on high-tempearture shot-time tensile strength of the cast iron.更多还原