Remarks on the evolution and performance of the different austenite morphologies at the simulated HAZs of a 2205 duplex stainless steel

被引：18

作者：

Morales, E., V ^{[1
,2
]}

Pozo, J. A. ^{[3
]}

Olaya, L. ^{[2
]}

Kassab, E. ^{[2
]}

Ponciano, J. A. C. ^{[4
]}

Ghauami, K. ^{[5
]}

Bott, I. S. ^{[2
]}

机构：

[1] Cent Univ Las Villas, Phys Dept, Santa Clara 54830, VC, Cuba

[2] Pontifical Catholic Univ Rio de Janeiro PUC Rio, Chem & Mat Engn Dept, Rua Marques S Vicente 225, BR-22541900 Rio De Janeiro, RJ, Brazil

[3] Cent Univ Las Villas, Welding Res Ctr, Santa Clara 54830, VC, Cuba

[4] Univ Fed Rio de Janeiro, Dept Met & Mat Engn, COPPE, Corros Lab,Ilha Fundao,IF B, Caixa Postal 68505, BR-21941972 Rio de Janeiro, RJ, Brazil

[5] Pontifical Catholic Univ Rio de Janeiro PUC Rio, Civil Engn Dept, Rua Marques S Vicente 225, BR-22453900 Rio De Janeiro, RJ, Brazil

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2019年 / 8卷 / 05期

关键词：

Duplex stainless steel; Intragranular austenite; HAZ; Optical microscopy; Transmission electron microscopy; Mechanical properties; HEAT-AFFECTED ZONE; CRITICAL PITTING TEMPERATURE; CORROSION BEHAVIOR; WIDMANSTATTEN AUSTENITE; NITRIDE PRECIPITATION; PHASE-TRANSFORMATION; GAMMA-PHASE; WELD METAL; MICROSTRUCTURE; FERRITE;

D O I：

10.1016/j.jmrt.2019.07.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Some features of the austenite micro structural evolution have been reviewed at the simulated HAZs (Heat Affected Zones) in a duplex stainless steel. The evolution of the different morphological forms of austenite was quantified in the microstructures for each simulated heat input. A detailed study of the micro structural parameters in the present study, allowed justifying the performance of the volume fractions corresponding to the three austenite morphologies on the HAZ mechanical properties and pitting corrosion resistance. Transmission electron microscopy showed the predominance of specific orientation relationships between the small intragranular austenite precipitates and ferrite considering the nitrogen content in the alloy and the transformation route. (C) 2019 The Authors. Published by Elsevier B.V.

引用

页码：3936 / 3949

页数：14

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