Effect of Solid Solution Treatment on Corrosive Action of 00Cr26Ni5Mo2Cu3Re Duplex Stainless Steel in Acid Stage

2011 ◽  
Vol 335-336 ◽  
pp. 566-570
Author(s):  
Hong Pu Zhao ◽  
Shun Xing Wang
Keyword(s):  
Solid Solution ◽  
Stainless Steel ◽  
High Temperature ◽  
Low Temperature ◽  
Acid Solution ◽  
Duplex Stainless Steel ◽  
Solution Treatment ◽  
Solution Temperature ◽  
Solid Solution Treatment ◽  
Corrosive Resistance

Effect of solid solution treatment on corrosive behavior of 00Cr26Ni5Mo2Cu3Re Duplex Stainless Steel in static stage of HNO3+HF acid solution is studied in the paper.The results show that the corrosion between phases and pitting corrosion on ferrite are serious at low temperature ,the phenomenon gradually disappear with the solid solution temperature rising ; the corrosive resistance of 00Cr26Ni5Mo2Cu3Re is getting better first and then decrease with solution temperature at high temperature, the best corrosive resistance temperature is at 1050°C.

scholarly journals On the microstructure and mechanical properties of silver-bearing antibacterial CD4MCu duplex stainless steels: Solid solution temperature

2019 ◽  
Vol 9 (9) ◽  
pp. 1067-1075
Author(s):  
Hongliang Xiang ◽  
Dong Liu ◽  
Xueping Chen ◽  
Huatang Cao ◽  
Xuanpu Dong
Keyword(s):  
Solid Solution ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Duplex Stainless Steel ◽  
Volume Fraction ◽  
Antibacterial Properties ◽  
Solution Treatment ◽  
Solution Temperature ◽  
Ion Release ◽  
Solid Solution Treatment

The Ag-bearing antibacterial stainless steel has attracted substantial attention in the field of bacterial proliferation prevention. In this study, a Cu–Ag alloy was incorporated into a CD4MCu duplex stainless steel (DSS) to produce a good antibacterial property. The Ag-bearing CD4MCu duplex stainless steel samples were conducted solid solution treatment at various temperatures. The effects of the solid solution temperature on the microstructure, mechanical and corrosion properties, as well as silver ion release characteristics and antibacterial properties were investigated. Results show that apart from the original α, γ phases, Ag-bearing phases were formed in all samples after solid solution at different temperatures. The volume fraction of α and Ag-bearing phases decrease with increasing solution temperature. The tensile strength, hardness, elongation, and corrosion resistance first decrease and then increase along with the increase in the solid solution temperature. The heat treatment conducted at 1150 °C increases the strength, the hardness, the pitting corrosion resistance, and the antimicrobial capability simultaneously. The antibacterial rates of all the Ag-bearing CD4MCu duplex stainless steel samples after solid solution treatment are above 99%, indicating their good anti-bacterial capabilities.

Effect of heat treatment on structure and properties of GTAW and laser beam welded super-duplex stainless steel joints

2019 ◽  
Vol 34 (01n03) ◽  
pp. 2040061 ◽  
Author(s):  
Kai Qi ◽  
Guangjin Wang ◽  
Yunxue Jin ◽  
Jiayang Gu ◽  
Zhongyu Zhang ◽  
...  
Keyword(s):  
Solid Solution ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Impact Toughness ◽  
Laser Beam ◽  
Duplex Stainless Steel ◽  
Solution Treatment ◽  
Solid Solution Treatment ◽  
Pitting Corrosion Resistance ◽  
The Impact

Duplex stainless steel, consisting of ferrite and austenite, has good corrosion resistance and is often used in harsh marine environments. In this paper, welding on SAF2507 duplex stainless steel with 5 mm thickness was finished by laser beam welding (LBW) and gas tungsten arc welding (GTAW). The post-weld solid solution treatment was also conducted at temperature of [Formula: see text]C followed with cooling by water after 1 h. The results showed that both LBW and GTAW could produce well-produced welds. The microstructures of the welds were composed of ferrite and austenite phases. After solid solution treatment at [Formula: see text]C, the two-phase structure of LBW joint became uniform, while [Formula: see text] phase was produced in GTAW joint. The impact test of welded joints at room-temperature was carried out. After solid solution treatment at [Formula: see text]C, the impact toughness of LBW joints obviously increased, but the impact toughness of GTAW joint decreased with the fracture morphology of brittle mode. The electrochemical experiments on the welded joints showed that the pitting corrosion resistance of LBW joints improved after solid solution treatment, while the pitting corrosion resistance of GTAW joints decreased.

Effects of the Welding Process on Mechanical Properties and Corrosion Resistance of 2205 Duplex Stainless Steel

2011 ◽  
Vol 189-193 ◽  
pp. 1212-1217 ◽  
Author(s):  
Lian Zheng Ding ◽  
Qing Sen Meng ◽  
Zhong Wei Yang ◽  
Gang Wang
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Duplex Stainless Steel ◽  
Solution Treatment ◽  
Inert Gas ◽  
2205 Duplex Stainless Steel ◽  
Solid Solution Treatment ◽  
Welding Processes

In this study, welding of 2205 duplex stainless steel was carried out by first using plasma arc welding as root welding and then using tungsten inert-gas (TIG) welding and metal inert-gas (MIG) welding respectively as cover welding, Weldability of 2205 duplex stainless steel using two different the welding processes is investigated. Microstructure characteristics, mechanical properties, pitting corrosion resistance are made comparison between the weldment that is solution treated and that is not .Influence of heat input and the solid solution treatment on complex properties of welded joints is evaluated, and the solid solution treatment was conducted for both of the welded joints fabricated by the welding processes mentioned preciously.

Effect of Solution Temperature on Microstructure of 2205 Duplex Stainless Steel Welded Joints

2010 ◽  
Vol 658 ◽  
pp. 432-435
Author(s):  
Yuan Yuan Qiao ◽  
De Ning Zou ◽  
Jiao Li ◽  
Ying Han
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Arc Welding ◽  
Solution Treatment ◽  
Optical Microscope ◽  
Solution Temperature ◽  
2205 Duplex Stainless Steel ◽  
Manual Arc Welding ◽  
Temperature Solution ◽  
Steel Joints

The various temperature solution experiments were carried out in this paper, which for 2205 duplex stainless steel joints welded by manual arc welding. The evolutions of microstructure in pre/post solution treatment and the contents of ferrite phase were conducted by using optical microscope and ferrite scope detector. The analysis results in the welded, the heat affected and the base metal regions show that suitable solution treatment is effective to adjust the welded microstructure condition. The austenite in each region transformed into ferrite when the temperature enhanced from 1050 to 1200°C. This resulted in increasing the volume of ferrite and coarsening the grain. All microstructure characteristics of the three regions were taken into account, it deduced that the feasible solution temperature range was 1050~1100°C for 2205 duplex stainless steel welded joint.

Effects of Solution Treatment on the Microstructure and Properties of 7003 Aluminum Alloy

2010 ◽  
Vol 123-125 ◽  
pp. 1219-1222
Author(s):  
Xiao Ming Chen ◽  
Ren Guo Song
Keyword(s):  
Electron Microscopy ◽  
Solid Solution ◽  
Aluminum Alloy ◽  
Solution Treatment ◽  
Solution Temperature ◽  
X Ray ◽  
Microstructure And Properties ◽  
Solid Solution Treatment ◽  
Before And After ◽  
Scanning Electron

The microstructure and properties of 7003 aluminum alloy before and after aging under various solid solution treatment parameters have been studied by electronic tensile machine, scanning electron microscopy (SEM) and energy dispersive X-ray spectrometer (EDS). It’s showed that the strength decreased while the ductility increased with raising the solid solution temperature before aging; the strength decreased and then increased while the ductility increased and then decreased with increasing the solid solution time. The strength of 7003 aluminum alloy after aging were evidently higher than those before aging, and the samples solutioned at 743 K for 70 min were of the best mechanical properties with YS=286 MPa, UTS=345 MPa, E=15.5%, which are higher than those of the original alloy by 2.1%, 1.5% and 29.1% respectively. Hence 743 K/70 min is one of the best solid solution regimes.

Effects of Solid Solution Temperature on the Structure and Properties of TC16 Titanium Alloy Bars

2014 ◽  
Vol 881-883 ◽  
pp. 1588-1591
Author(s):  
Quan Ming Liu ◽  
Zhao Hui Zhang ◽  
Hai Ying Yang ◽  
Shi Feng Liu
Keyword(s):  
Solid Solution ◽  
Titanium Alloy ◽  
Solution Treatment ◽  
Aging Treatment ◽  
Martensite Phase ◽  
Solution Temperature ◽  
Β Phase ◽  
Solid Solution Treatment ◽  
Structures And Properties ◽  
Reduction Of Area

The effects of solid solution temperature on the structures and properties of TC16 titanium alloy bars that made solid solution treatment in 780°C, 800°C, 850°C, 900°C, respectively, the processing time for 30min, then cooled in the air were studied. The results show that during solid solution treatment under 800°C, the alloy structures are the primary ɑ phase and the metastable β phase, while solid solution temperature rise to 800°C, the alloy structures begin to appear ɑ" martensite phase. With the increase of solid solution temperature, the alloy grain grow up somewhat, material tensile strength increases gradually, yield strength firstly decreases and then increases, elongation at break firstly increases and then decreases, percentage reduction of area at break decreases gradually. Solid solution state of TC16 titanium alloy bars are not suitable for cold heading forming, strengthening the titanium alloy must be subsequent artificial aging treatment.

Effects of Solid-Solution Treatment on Microstructure and Mechanical Properties of HIP Treated Alloy 718

2011 ◽  
Vol 117-119 ◽  
pp. 1315-1318 ◽  
Author(s):  
Shih Hsien Chang ◽  
Shih Chin Lee ◽  
Kuo Tsung Huang ◽  
Cheng Liang
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Tensile Strength ◽  
Thin Sheet ◽  
Solution Treatment ◽  
Aging Treatment ◽  
Solution Temperature ◽  
Alloy 718 ◽  
Solid Solution Treatment ◽  
Treatment Parameter

The aim of this study is to explore alloy 718 that treated at an optimal HIP process, and then imposed various solid-solution temperatures and aging treatment. The experimental results indicated that Laves and δ precipitations obviously appeared within the grain boundary, under HIP treatment and lower solid-solution temperatures (940°C), which would result in poor mechanical properties. However, Laves and δ phase can be completely dissolved at 1020°C 1 hour solid-solution treatment. The tensile strength was increased to 1331.5 MPa, and elongation reached up to 6.1% under a 1020°C solid-solution and aging treatment. Increasing the solid-solution temperature to 1060°C would cause parts of the NbC to dissolve, thus a large number of the thin sheet-shaped NbC would appear in the solid-solution and aging specimen. The yield stress is slight increase, but a lot of NbC precipitations will result in the decreasing tensile strength (1298.8 MPa) and elongation (5.4%). As a result, the optimal solid-solution treatment parameter of alloy 718 is 1020°C for 1-hour.

Effect of Silicide on Dynamic Recrystallization in Near Alpha Titanium Alloy

2016 ◽  
Vol 879 ◽  
pp. 1634-1638
Author(s):  
Tatsuaki Sakamoto ◽  
Shohei Otsuka ◽  
Sengo Kobayashi
Keyword(s):  
Solid Solution ◽  
High Temperature ◽  
Dynamic Recrystallization ◽  
Tensile Test ◽  
Solution Treatment ◽  
Iced Brine ◽  
High Temperature Mechanical Properties ◽  
Solid Solution Treatment ◽  
Alpha Titanium ◽  
Lath Structure

Dynamic recrystallization in Ti-1100 was investigated. Ti-1100 is one of near α titanium alloys and contains Si for improving high temperature mechanical properties. Ti-1100 exhibits martensitic transformation by quenching into iced brine after solid solution treatment. Hereafter specimens subjected to quenching into iced brine and to cooling in air after solid solution treatment are called IBQ specimen and AC specimen, respectively. After tensile test at high temperature, IBQ specimen exhibits morphological change from lath structure to equiaxed structure, but AC specimen does not. It is indicated that dynamic recrystallization occurs during the tensile test of IBQ specimen. Effect of silicide on the dynamic recrystallization was investigated using two specimens: one included more silicide precipitates and the other less. The former specimen shows smaller recrystallized grains than the latter. It is indicated that the specimen including more silicides exhibits smaller recrystallized grains.

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