Quenching of Cast Iron with a High Copper Content

被引：0
|
作者：
Stepanova, Natalia [1 ]
Bataev, Anatoly [1 ]
Razumakov, Aleksey [1 ]
机构：
[1] Novosibirsk State Tech Univ, Novosibirsk 630073, Russia
来源：
INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES 2015 | 2015年 / 1683卷
关键词：
STAINLESS-STEELS; RESISTANCE;
D O I：
10.1063/1.4932912
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The structure, hardness, and microhardness of hypoeutectic white cast iron alloyed with copper after quenching at 1000 and 1120 degrees C is studied. Features of cupric inclusion separation are detected and its size distribution is shown. After quenching the structure consists of martensite, residual austenite, and vermicular graphite. A decrease in the size and volume fraction of globular cupric inclusions is detected, along with the complete dissolution of nanoscale cupric inclusions, which are located in the ferrite of pearlite colonies. The result of these structural changes is a 30% increase in iron hardness. Cast iron quenching at 1120 degrees C is followed by an increase in the austenite volume fraction to 69%. This effect is due to a decrease in the volume fraction of graphite and a corresponding increase in the carbon content in gamma-Fe. Cupric inclusions are located mainly along boundaries of austenitic grains.
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页数：5
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