Effects of Base Metal Preheating on the Microstructure, Mechanical Properties, and Corrosion Resistance of UNS S32750 SDSS Pulsed Nd:YAG Laser Welding

被引：3

作者：

da Cruz Junior, Eli J. ^{[1
]}

Varasquim, Francisco M. F. A. ^{[1
]}

Crespo, Gillian S. ^{[2
]}

Ventrella, Vicente. A. ^{[2
]}

Zambon, Andrea ^{[3
]}

Calliari, Irene ^{[3
]}

机构：

[1] Sao Paulo Fed Inst Educ Sci & Technol, Campus Itapetininga, BR-18202000 Itapetininga, Brazil

[2] Sao Paulo State Univ, UNESP, Mech Engn Dept, Campus Ilha Solteira, BR-15385000 Ilha Solteira, Brazil

[3] Univ Padua, Dept Ind Engn, Padua, Italy

来源：

COATINGS | 2023年 / 13卷 / 11期

关键词：

super duplex stainless steel; laser welding; heat treatment; microstructure; microhardness; corrosion resistance; 2507 SUPER DUPLEX; STAINLESS-STEEL; PITTING CORROSION; HEAT-TREATMENT; EVOLUTION; TEXTURE; ENERGY;

D O I：

10.3390/coatings13111930

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Super duplex stainless steel has a microstructure consisting of equal proportions of austenite and ferrite. However, welding with Nd:YAG pulsed laser results in an imbalanced microstructure that compromises the steel's properties. This paper studied the effects of preheating the base metal on pulsed Nd:YAG laser welding. Four conditions were evaluated (no preheating and heating at 100 degrees C, 200 degrees C, and 300 degrees C). The analysis included studying the microstructure, microhardness, and corrosion resistance. Preheating the base metals was found to be an effective method for increasing the volume fractions of austenite. The preheated samples showed an improvement in corrosion resistance compared to the untreated sample. The microhardness varied, with the ferrite amount being higher in the untreated sample.

引用

页数：11

共 26 条

[1] Ameliorative Corrosion Resistance and Microstructure Characterization of 2205 Duplex Stainless Steel by Regulating the Parameters of Pulsed Nd:YAG Laser Beam Welding [J].