Effect of post weld heat treatment (PWHT) on the microstructure, mechanical properties, and corrosion resistance of dissimilar stainless steels

被引：47

作者：

Ghorbani, Saeid ^{[1
]}

Ghasemi, Reza ^{[2
,3
]}

Ebrahimi-Kahrizsangi, Reza ^{[1
]}

Hojjati-Najafabadi, Akbar ^{[4
]}

机构：

[1] Islamic Azad Univ, Adv Mat Res Ctr, Dept Mat Engn, Najafabad Branch, Najafabad, Iran

[2] Iranian Acad Ctr Educ Culture & Res ACECR, Khorasan Razavi Branch, Azadi Sq,POB 91775-1376, Mashhad, Iran

[3] UAST, Khorasan Razavi Branch, Mashhad, Iran

[4] Islamic Azad Univ, Najafabad Branch, Young Researchers & Elite Club, Najafabad, Iran

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2017年 / 688卷

关键词：

Stainless steels; Heat treatment; Mechanical properties; Corrosion properties; GRAIN-REFINEMENT; JOINTS;

D O I：

10.1016/j.msea.2017.02.020

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The dissimilar austenitic stainless steel (AISI304L) and ferritic stainless steel (AISI430) have been welded with two types of filler metals (316L and 2594L) by GTAW. Then, the effect of heat treatment on the microstructure, mechanical properties, and corrosion properties of welded joint was investigated. Due to remove chromium carbide created during welding process and homogenize the microstructure, heat treatment was carried out on the whole series of the samples at 860 degrees C and 960 degrees C. The microstructural, fracture cross-section and corrosive areas of the samples were investigated by SEM. Tensile, bending and potentiodynamic polarization tests were employed to characterize mechanical and corrosion performance of the samples. The results indicate that the welded joints had good mechanical properties after heat treatment so that the best tensile strength was obtained at 960 degrees C. Due to reduce grain size, the heat treatment samples show minimum corrosion resistance at 960 degrees C in comparison to 860 degrees C.

引用

页码：470 / 479

页数：10

共 20 条

[1] Grain Refinement in Ferritic Stainless Steel Welds: The Journey so Far [J].

Amuda, M. O. H. ;

Mridha, S. .

ADVANCES IN MATERIALS AND PROCESSING TECHNOLOGIES, PTS 1 AND 2, 2010, 83-86 :1165-1172

[2]

Amuda M.O.H., 2009, International Journal of Mechanical and Materials Engineering (IJMME), V4, P160

[3] Austenite-preferential corrosion attack in 316 austenitic stainless steel weld metals [J].

Cui, Y. ;

Lundin, Carl D. .

MATERIALS & DESIGN, 2007, 28 (01) :324-328

[4] Effect of magnetic field applied during gas metal arc welding on the resistance to localised corrosion of the heat affected zone in AISI 304 stainless steel [J].

Curiel, F. F. ;

Garcia, R. ;

Lopez, V. H. ;

Gonzalez-Sanchez, J. .

CORROSION SCIENCE, 2011, 53 (07) :2393-2399

[5] Effect of TIG welding on corrosion behavior of 316L stainless steel [J].

Dadfar, M. ;

Fathi, M. H. ;

Karimzadeh, F. ;

Dadfar, M. R. ;

Saatchi, A. .

MATERIALS LETTERS, 2007, 61 (11-12) :2343-2346

[6] Pitting corrosion of welded joints of austenitic stainless steels studied by using an electrochemical minicell [J].

Garcia, C. ;

Martin, F. ;

de Tiedra, P. ;

Blanco, Y. ;

Lopez, M. .

CORROSION SCIENCE, 2008, 50 (04) :1184-1194

[7]

Greeff ML, 2006, WELD J, V85, p243S

[8] INFLUENCE OF MARTENSITE AND FERRITE ON PROPERTIES OF 2-PHASE STAINLESS STEELS HAVING MICRODUPLEX STRUCTURES [J].

HAYDEN, HW ;

FLOREEN, S .

METALLURGICAL TRANSACTIONS, 1970, 1 (07) :1955-&

[9] Laser beam welding of dissimilar stainless steels in a fillet joint configuration [J].

Khan, M. M. A. ;

Romoli, L. ;

Fiaschi, M. ;

Dini, G. ;

Sarri, F. .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2012, 212 (04) :856-867

[10]

KOZUH S., 2007, MAT GEOENVIRONMENT, V54, P331

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