Application of Rietveld Refinement to Investigate the High Chromium White Cast Iron Austempered at Different Temperatures

被引：12

作者：

Hou Qing-yu ^{[1
,2
]}

Huang Zhen-yi ^{[2
]}

Wang Jing-tao ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nanjing 210094, Jiangsu, Peoples R China

[2] Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243002, Anhui, Peoples R China

来源：

JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL | 2009年 / 16卷 / 04期

关键词：

high chromium white cast iron; austempering; retained austenite; Rietveld refinement; microstructure; properties; FRACTURE-TOUGHNESS; MECHANICAL-PROPERTIES; ABRASION RESISTANCE; WEAR-RESISTANCE; MICROSTRUCTURE; TRANSFORMATION; DECOMPOSITION; DIFFRACTION; MANGANESE; CARBIDES;

D O I：

10.1016/S1006-706X(09)60057-1

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The effect of austempering temperature on the microstructure and properties of a high chromium white cast iron was investigated with the Rietveld refinement method. The result shows that the upper bainite exists in the sample austempered at 623 K and the martensite, lower bainite, M7C3, and retained austenite exist in the samples austempered at 563 K and 593 K. The relative content of the retained austenite increases with increasing the austempering temperature from 563 K to 623 K. The higher hardness, impact toughness and impact abrasive wear resistance can be obtained for the specimen austempered at 593 K.

引用

页码：33 / 38

页数：6

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