Copper in low alloyed grey cast irons

被引：0
|
作者：
Polovinchuk, V.P. [1 ]
Zhukov, A.A. [1 ]
机构：
[1] Vinnitskij Politekhnicheskij Inst, Vinnitsa, Russia
来源：
Metallovedenie i Termicheskaya Obrabotka Metallov | 1992年 / 05期
关键词：
Cyclic heat treatment - Iron SCh20;
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学科分类号：
摘要：
Samples of cast iron SCh 20 with 1.8%Cu were analysed by means of Auger electronic spectroscopy before and after cyclic heat treatment (heating up to 350°C, 15 sec and cooling in air 15 sec). In the initial state copper concentration at grain boundaries reached 4.2%, at a machined surface 0.35% and after 500 cycles of heat treatment 6.3% and 2.8% accordingly. Copper precipitation on the surface of components at friction contributes to the decrease of the friction coefficient and increase in wear resistance.
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页码：43 / 44
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