THE EFFECT OF THE SOFTENING ANNEALING AND OF NORMLIZING ON THE CAVITATION EROSION RESISTANCE OF NODULAR CAST IRON FGN 400-15

被引：0
作者：
Bena, Traian [1 ]
Mitelea, Ion [1 ]
Bordeasu, Ilare [1 ]
Craciunescu, Cornel [1 ]
机构：
[1] Politehn Univ Timisoara, Timisoara, Romania
来源：
METAL 2016: 25TH ANNIVERSARY INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS | 2016年
关键词：
Heat treatment; cavitation erosion; microstructure; nodular cast iron;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
This paper analyzes, by comparison, the cavitation erosion resistance of the samples treated through softening annealing at 710 +/- 10 degrees C with the purpose of partial spheroidization of pearlite and decomposition of free cementite traces from the microstructure, respectively the samples treated through normalizing at 860 +/- 10 degrees C with the purpose of the pearlite proportion increasing and the cavitation erosion resistance improving. Cavitation tests were conducted on a vibrating device with piezo-ceramic crystals, following standard rules ASTM G32-2010. The microstructure characterization of the heat treated and eroded by cavitation was made by optic microscopy, and scan electronic microscopy. The obtained results show an improvement of cavitation erosion resistance after the application of the heat treatment for normalizing as a follow-up of the structure finishing and growing of the pearlite proportion in the base matrix.
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收藏
页码：653 / 658
页数：6
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