PROPERTIES OF HEAT TREATED CENTRIFUGALLY CAST HIGH STRENGTH STEEL TUBES

被引:0
|
作者
Katavic, Boris [1 ]
Gligorijevic, Bojan [1 ]
Odanovic, Zoran [2 ]
Djurdjevic, Mile [3 ]
机构
[1] Inst Gosa, Milana Rakica 35, Belgrade, Serbia
[2] IMS Inst, Belgrade, Serbia
[3] Nemak Linz, Linz 4030, Austria
关键词
Centrifugal casting; high strength steel tubes; heat-treatment; micro-structure; mechanical properties; modeling;
D O I
暂无
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The effects of heat treatment on structural and mechanical properties of the centrifugally cast CrMo and CrMoNb high strength steel tubes of different diameters and wall thicknesses are presented in this paper. Centrifugal casting process was performed at mould rotation speeds ranging from 1320 to 1562 rpm. Specimens were homogenized at 1323 K, austenitized at 1143 K, quenched and tempered between 473 K and 923 K. The results of tensile and Charpy impact testing show intensive increase in ductility properties and impact energy at temperatures above 823 K, while strength decreases gradually with tempering temperature. Variations of the mechanical properties with tempering temperature were modeled by means of polynomial functions.
引用
收藏
页码:221 / 230
页数:10
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