Application of Rietveld Refinement to Investigate the High Chromium White Cast Iron Austempered at Different Temperatures
HOU Qing��yu1,2,HUANG Zhen��yi2,WANG Jing��tao1
1. School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China;2. School of Materials Science and Engineering, Anhui University of Technology, Ma��anshan 243002, Anhui, China
Application of Rietveld Refinement to Investigate the High Chromium White Cast Iron Austempered at Different Temperatures
HOU Qing��yu1,2,HUANG Zhen��yi2,WANG Jing��tao1
1. School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China;2. School of Materials Science and Engineering, Anhui University of Technology, Ma��anshan 243002, Anhui, China
ժҪ 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.
Abstract��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.
HOU Qing��yu;HUANG Zhen��yi;WANG Jing��tao. Application of Rietveld Refinement to Investigate the High Chromium White Cast Iron Austempered at Different Temperatures[J]. �й������ڿ���, 2009, 16(4): 33-0.
HOU Qing��yu;HUANG Zhen��yi;WANG Jing��tao. Application of Rietveld Refinement to Investigate the High Chromium White Cast Iron Austempered at Different Temperatures. Chinese Journal of Iron and Steel, 2009, 16(4): 33-0.
2009, Vol. 16 
