Design of wear resistant boron-modified supermartensitic stainless steel by spray forming process

2015 ◽  
Vol 83 ◽  
pp. 214-223 ◽  
Author(s):  
G. Zepon ◽  
A.R.C. Nascimento ◽  
A.H. Kasama ◽  
R.P. Nogueira ◽  
C.S. Kiminami ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Spray Forming ◽  
Forming Process ◽  
Wear Resistant ◽  
Supermartensitic Stainless Steel

sPreparation of ZrO 2 beads by an improved micro‐droplet spray forming process

2021 ◽  
Author(s):  
Jun Chen ◽  
Wan‐Qing Xue ◽  
Chang‐Ming Xu ◽  
Pai‐Feng Luo ◽  
Ji‐Gui Cheng ◽  
...  
Keyword(s):  
Spray Forming ◽  
Forming Process ◽  
Droplet Spray

Study on Nitridation Behavior of Mg-Ca Alloy under Nitrogen

2011 ◽  
Vol 415-417 ◽  
pp. 1127-1131
Author(s):  
Xiao Xia Yang ◽  
Dun Qiang Tan ◽  
Dong Fei Xiao ◽  
Yi Jie Zhan
Keyword(s):  
Magnesium Alloy ◽  
Profile Analysis ◽  
Surface Film ◽  
Spray Forming ◽  
Holding Time ◽  
Mg Alloy ◽  
Nitride Film ◽  
Forming Process ◽  
Small Cracks

To study the ignition-proof behavior in the spray deposited magnesium alloy with nitrogen as atomizing gas, SEM and XRD were employed to study the morphology and elements profile of nitride film formed on the Mg-5Ca alloy melt in different conditions, and the ignition proof principle was also analyzed preliminarily. The results indicated that under ordinary nitrogen (99.5%), a layer of smooth and continuous nitride film was formed on the surface of Mg-5Ca alloy after sintered at 740°C for 2 hours, and with the increasing of temperature and holding time, small cracks and cavities appeared locally on the surface film. The surface film was mainly composed of CaO、MgO、Ca3N2and Mg3N2.The profile analysis of the nitride film indicated that Ca element collected on the surface of the nitride film, and a multiple film was formed which filled the loose and holes of single film, avoided the burning of Mg alloy during spray forming process.

Influence of tempering on microstructure and mechanical properties of Ti alloyed 13%Cr supermartensitic stainless steel

2013 ◽  
Vol 30 (12) ◽  
pp. 1470-1476 ◽  
Author(s):  
S. S. M. Tavares ◽  
J. M. Pardal ◽  
G. C. de Souza ◽  
C. A. S. de Oliveira ◽  
H. F. G. de Abreu
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Supermartensitic Stainless Steel ◽  
Microstructure And Mechanical Properties

Modeling of Flow Fields of Different Delivery Chamfers in Spray Forming Process

2014 ◽  
Vol 789 ◽  
pp. 554-559
Author(s):  
Yang Liu ◽  
Zhou Li ◽  
Guo Qing Zhang ◽  
Wen Yong Xu
Keyword(s):  
Flow Field ◽  
Gas Flow ◽  
Fluid Dynamic ◽  
Metal Flow ◽  
Spray Forming ◽  
Operating Pressure ◽  
Delivery Tube ◽  
Forming Process ◽  
Atomization Process ◽  
Sharp Point

The computational fluid dynamic (CFD) software was used to calculate the velocity field in atomization chamber of spray forming equipment. The relationship between melt flow rates, gas aspiration of the atomizer and operating pressure are complex, and the above mentioned parameters are closely related to the atomization process. The influences of different delivery chamfers on gas flow field, which is determined by atomizer structure, were analyzed. Using K-epsilon model with a symmetrical domain, the gas dynamic of different delivery chamfer conditions were investigated. The results indicate that the sharp point of delivery tube causes detachment of flow field, and 56°, 45° and 34° chamfer conditions have same diffusion angle. Gas was aspirated from delivery tube when chamfer was 0°, which is beneficial to liquid metal flow in atomization process.

scholarly journals Corrosion Behavior of Plasma Nitrided and Nitrocarburised Supermartensitic Stainless Steel

2018 ◽  
Vol 21 (3) ◽  
Author(s):  
Frederico Augusto Pires Fernandes ◽  
Carlos Alberto Picone ◽  
George Edward Totten ◽  
Luiz Carlos Casteletti
Keyword(s):  
Stainless Steel ◽  
Corrosion Behavior ◽  
Supermartensitic Stainless Steel

Effect of Niobium on Phase Transformations, Mechanical Properties and Corrosion of Supermartensitic Stainless Steel

2017 ◽  
Vol 26 (4) ◽  
pp. 1664-1672
Author(s):  
Mariana Perez de Oliveira ◽  
José Wilmar Calderón-Hernández ◽  
Rodrigo Magnabosco ◽  
Duberney Hincapie-Ladino ◽  
Neusa Alonso-Falleiros
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Phase Transformations ◽  
Supermartensitic Stainless Steel ◽  
Mechanical Properties And Corrosion

Study on FGH95 Superalloy Prepared by Spray Forming

2011 ◽  
Vol 337 ◽  
pp. 434-438
Author(s):  
Yi Xu ◽  
Shu Qin
Keyword(s):  
Technological Parameter ◽  
Nonmetallic Inclusions ◽  
Preparation Method ◽  
Spray Forming ◽  
Forming Process ◽  
Cylindrical Billet ◽  
Phase Size ◽  
The Difference ◽  
Cooling Velocity ◽  
Fgh95 Superalloy

FGH95 superalloy cylindrical billet was prepared by spray forming, The yield is 73.6%, porosity is 0.6%, the oxygen content is only 20ppm. Spray forming preparation method and technological parameter were illustrated. The microstructure on the different positions of billet were observed. The results show that the difference of γ′ phase size, feature and distribution depend on different cooling velocity and local temperature difference during the spray forming process. SEM of nonmetallic inclusions were observed, and XPS of nonmetallic inclusions, nozzle and adhesive were analysed, the results show that the nonmetallic inclusions were from nozzle and adhesive.

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