Effects of Rare Earth Addition on the Inclusions and Mechanical Properties of 2205 Duplex Stainless Steel

被引：11

作者：

Liu, Xiao ^{[1
]}

Wang, Longmei ^{[2
]}

机构：

[1] Hebei United Univ, Hebei Key Lab Modern Met, Tangshan 063009, Hebei, Peoples R China

[2] Cent Iron & Steel Res Inst, Met Dept, Beijing 100081, Peoples R China

来源：

FRONTIERS OF MANUFACTURING SCIENCE AND MEASURING TECHNOLOGY II, PTS 1 AND 2 | 2012年 / 503-504卷

关键词：

RE; duplex stainless steel; inclusions; mechanical properties; TEMPERATURE;

D O I：

10.4028/www.scientific.net/AMR.503-504.463

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of rare earth metals on the inclusions and the mechanical properties of 2205 duplex stainless steel were studied by metallographic examination, scanning electron microscope (SEM) and energy spectrum analysis. The results show that the morphologies and sizes of non-metallic inclusions in 2205 duplex stainless steel are changed, and rare earth metals played a very good role of modifying inclusions. The fracture mode of 2205 duplex stainless steel is typical cleavage fracture, but quasi-cleavage and dimple fracture after adding RE into the steel, and the spherical inclusions of rare earth oxysulfide in the dimple are the main factors for this transformation. The transverse impact toughness of 2205 duplex stainless steel is improved obviously by RE. In comparison with 2205 duplex stainless steel without RE, the transverse impact toughness of 2205 duplex stainless steel with RE is increased 20.49% at -40 degrees C, and the room temperature strength are improved, the elongation and reduction of area have been improved 11.67%, 24.55% respectively.

引用

页码：463 / +

页数：2

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