scholarly journals Effect of Process Parameters on Density and Mechanical Behaviour of a Selective Laser Melted 17-4PH Stainless Steel Alloy

2020 ◽  
Author(s):  
Liang Huang ◽  
Yan Cao ◽  
Gaohong Li ◽  
Yao Li ◽  
Yunpeng Dang ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Process Parameters ◽  
Mechanical Behaviour ◽  
Flexible Manufacturing ◽  
Complex Structure ◽  
High Strength ◽  
Steel Alloy ◽  
Stainless Steel Alloy ◽  
Temperature Conduction ◽  
Selection Of

Abstract 17-4 PH stainless steel alloy has been widely used in the field of defense industry such as weapon equipment, aerospace, nuclear energy and so on because of its high strength, high toughness, high temperature resistance and corrosion resistance. In order to meet the flexible manufacturing requirements of multi-variety small batch complex structure products with lower cost and higher efficiency, Selective laser melted 17-4PH stainless steel alloy has become the focus of research in the field of rapid alloy manufacturing in recent years. This paper studied the density characteristics and the distribution characteristics of holes and spheroidization phenomena of 17-4 PH pre-alloyed powder subjected to multidimensional temperature conduction under selective laser melting, and the mechanism of defect generation under temperature conduction is proposed. Finally, the optimal selection of the combination of different process parameters waere carried out by orthogonal test, and it was found that the comprehensive mechanical behaviour of the 17-4 PH stainless steel alloy after formed exceeded the ASTM A564 standard (the yield strength is 1132 MPa, the tensile strength is 1323 MPa, the elongation is 16.6%).

scholarly journals A high-strength silicide phase in a stainless steel alloy designed for wear-resistant applications

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
D. Bowden ◽  
Y. Krysiak ◽  
L. Palatinus ◽  
D. Tsivoulas ◽  
S. Plana-Ruiz ◽  
...  
Keyword(s):  
Stainless Steel ◽  
High Strength ◽  
Silicide Phase ◽  
Steel Alloy ◽  
Wear Resistant ◽  
Stainless Steel Alloy

ARMCO 21-6-9

Alloy Digest ◽  
1961 ◽  
Vol 10 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Austenitic Stainless Steel ◽  
Physical Properties ◽  
High Strength ◽  
Heat Treating ◽  
Steel Alloy ◽  
Temperature Performance

Abstract Armco 21-6-9 is an austenitic stainless steel alloy designed for use in applications where a combination of high strength and corrosion resistance is desired. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-125. Producer or source: Armco Inc., Eastern Steel Division.

Springback law of high-strength 21-6-9 stainless steel tube in numerical control bending under different process parameters

2015 ◽  
Vol 231 (10) ◽  
pp. 1783-1792 ◽  
Author(s):  
Jun Fang ◽  
Shiqiang Lu ◽  
Kelu Wang ◽  
Zhengjun Yao
Keyword(s):  
Stainless Steel ◽  
Friction Coefficient ◽  
Cross Section ◽  
Process Parameters ◽  
High Strength ◽  
Steel Tube ◽  
Numerical Control ◽  
Stainless Steel Tube ◽  
Outer Diameter ◽  
The Cross

In order to achieve the precision bending deformation, the effects of process parameters on springback behaviors should be clarified preliminarily. Taking the 21-6-9 high-strength stainless steel tube of 15.88 mm × 0.84 mm (outer diameter × wall thickness) as the objective, the multi-parameter sensitivity analysis and three-dimensional finite element numerical simulation are conducted to address the effects of process parameters on the springback behaviors in 21-6-9 high-strength stainless steel tube numerical control bending. The results show that (1) springback increases with the increasing of the clearance between tube and mandrel Cm, the friction coefficient between tube and mandrel fm, the friction coefficient between tube and bending die fb, or with the decreasing of the mandrel extension length e, while the springback first increases and then remains unchanged with the increasing of the clearance between tube and bending die Cb. (2) The sensitivity of springback radius to process parameters is larger than that of springback angle. And the sensitivity of springback to process parameters from high to low are e, Cb, Cm, fb and fm. (3) The variation rules of the cross section deformation after springback with different Cm, Cb, fm, fb and e are similar to that before springback. But under same process parameters, the relative difference of the most measurement section is more than 20% and some even more than 70% before and after springback, and a platform deforming characteristics of the cross section deformation is shown after springback.

Characterization and Evaluation of Type 316LN Stainless Steel/Alloy 800 Joint

1994 ◽  
Vol 85 (12) ◽  
pp. 833-838
Author(s):  
Arun Kumar Bhaduri ◽  
Tejinder Pal Singh Gill ◽  
Sathian Sujith ◽  
Ganesan Srinivasan ◽  
Sardari Lal Mannan
Keyword(s):  
Stainless Steel ◽  
Steel Alloy ◽  
Stainless Steel Alloy ◽  
316Ln Stainless Steel ◽  
Alloy 800 ◽  
Type 316Ln Stainless Steel
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