TEM STUDY OF DISLOCATIONS IN DUPLEX STAINLESS STEEL

被引：0

作者：

Jenko, Darja ^{[1
]}

Mandziej, Stan ^{[2
]}

Toffolon-Masclet, Caroline ^{[3
]}

Sustarsic, Borivoj ^{[1
]}

Jenko, Monika ^{[1
]}

机构：

[1] Inst Met & Technol, Ljubljana 1000, Slovenia

[2] Adv Mat Anal, NL-7500 DT Enschede, Netherlands

[3] CEA, DMN, SRMA, F-91191 Gif Sur Yvette, Sacley, France

来源：

MATERIALI IN TEHNOLOGIJE | 2014年 / 48卷 / 01期

关键词：

duplex stainless steel; ferrite; austenite; spinodal decomposition; transmission electron microscopy; dislocations; ALLOYS; CR;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Specimens of duplex stainless steel (DSS, the 258-alloy type) were isothermally annealed (aged) at 300 degrees C and 350 degrees C for 10000 h and 30000 h. Spinodal decomposition of the solid solution in ferrite occurs during the thermal ageing of this material with a redistribution of mainly Cr and Ni and a formation of nanocellular domains. This causes significant changes in the mechanical properties (the hardness and the tensile strength increase, while the ductility and the notch toughness decrease). The change in the mechanical properties may be related to the changes in the material's internal structure (stacking faults, the morphology and density of dislocations) or/and internal stresses. Therefore, non-aged and aged specimens were studied using transmission electron microscopy (TEM).

引用

页码：131 / 135

页数：5

共 10 条

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