Increasing Performance of Plasma Spray Formed Components

1998 ◽  
Author(s):  
J.S. O’Dell ◽  
T.N. Mckechnie ◽  
R.R. Holmes
Keyword(s):  
Plasma Spray ◽  
Heat Treating ◽  
Spray Forming ◽  
Material Strength ◽  
Thermal Treatments ◽  
Alloying Additions ◽  
Near Net Shape ◽  
Material Utilization ◽  
Very High ◽  
Strength And Ductility

Abstract Near net shape spray forming of components significantly simplifies and reduces cost of fabricating some structures. Material utilization is very high, and laborious machining can be avoided. As-spray formed components have been tested and found to perform adequately. However, improvements in alloying, thermal treatment and coating have been demonstrated to add increased performance to spray formed components. In fabricating tungsten components alloying additions of rhenium, nickel or iron have made significant increases in material strength and ductility. Thermal treatments such as heat treating and HIPing change and densify the microstructures. Coating the internal and external surfaces of components improves environmental compatibility. Increased performance of plasma spray formed refractory metal components is presented.

NICKELVAC K-500

Alloy Digest ◽  
2002 ◽  
Vol 51 (12) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Chloride Ion ◽  
High Strength ◽  
Heat Treating ◽  
Age Hardening ◽  
Alloying Additions ◽  
Excellent Corrosion Resistance ◽  
Nickel Copper ◽  
Extensive Range ◽  
Very High

Abstract Nickelvac K-500 is a nickel-copper alloy with age-hardening properties imparted by alloying additions of aluminum and titanium. The alloy is characterized by excellent corrosion resistance in an extensive range of natural and chemical environments, excellent resistance to chloride-ion stress-corrosion cracking, and very high strength and hardness. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-595. Producer or source: Allvac Metals Company.

Consolidation and Mechanical Properties of Near-Net-Shape Al-21 wt.% Si Component Fabricated by Plasma Spray Forming

2007 ◽  
Vol 119 ◽  
pp. 183-186 ◽  
Author(s):  
Soon Jik Hong ◽  
S. Patil ◽  
Chang Kyu Rhee ◽  
S. Seal
Keyword(s):  
Mechanical Properties ◽  
Plasma Spray ◽  
Room Temperature ◽  
Spray Forming ◽  
Homogeneous Distribution ◽  
Cast Material ◽  
Plasma Spray Forming ◽  
Fine Microstructure ◽  
Near Net Shape ◽  
Increased Strength

The microstructure and mechanical properties of Al-21 wt% Si components fabricated by plasma spray forming are analyzed. The microstructure of the plasma spry formed component showed a homogeneous distribution of fine Si particles embedded in the Al matrix. The grain size of α-Al varied between 200 to 500 nm and the size of the Si particles was about 50 to 100 nm in the plasma spray formed component. The room temperature tensile strength of the plasma spray formed component was 215 MPa with 0.5 % elongation, while for cast material, it was 130 MPa. Despite the porosities, the ultra-fine microstructure and homogeneous distribution of Si particles embedded in matrix are the foundation of the increased strength of the plasma spry formed component.

scholarly journals Near-Net-Shape Tungsten–Rhenium Alloy Parts Produced by Plasma Spray Forming and Hot Isostatic Pressing

2014 ◽  
Vol 55 (4) ◽  
pp. 713-721 ◽  
Author(s):  
Yueming Wang ◽  
Xiang Xiong ◽  
Weizhong Zhao ◽  
Lu Xie ◽  
Jianhui Yan ◽  
...  
Keyword(s):  
Plasma Spray ◽  
Hot Isostatic Pressing ◽  
Spray Forming ◽  
Plasma Spray Forming ◽  
Isostatic Pressing ◽  
Near Net Shape ◽  
Rhenium Alloy

scholarly journals Near-Net-Shape Molybdenum Parts Produced by Plasma Spray Forming

2011 ◽  
Vol 52 (6) ◽  
pp. 1269-1275 ◽  
Author(s):  
Yueming Wang ◽  
Xiang Xiong ◽  
Lu Xie ◽  
Xuan Xu ◽  
Xiaobing Min ◽  
...  
Keyword(s):  
Plasma Spray ◽  
Spray Forming ◽  
Plasma Spray Forming ◽  
Near Net Shape

Fabrication and Testing of Plasma-Spray Formed MoSi2 and MoSi2 Composite Tubes

1993 ◽  
Vol 322 ◽  
Author(s):  
R.G. Castro ◽  
J.R. Hellmann ◽  
A.E. Segall ◽  
D.L. Shelleman
Keyword(s):  
Plasma Spray ◽  
Room Temperature ◽  
Heat Treating ◽  
Spray Forming ◽  
Strength Distribution ◽  
Thick Wall ◽  
Plasma Spray Forming ◽  
Plasma Sprayed ◽  
Mosi2 Composite ◽  
Tubular Components

AbstractPlasma-spray forming has been used to fabricate thick-wall tubes of Mosi2 and Mosi2 containing concentric layers of A12O3. This process is being investigated as a potential fabrication method for producing tubular components of Mosi2 and Mosi2 composites for use in high temperature fuel-burner applications. Results will be reported on the spray forming method used to produce tubes of various sizes. The room temperature strength of pure Mosi2 tubes in the as-deposited condition, and after heat-treating at 1500 °C for 2 hours in vacuum, will also be reported. The strength of plasma sprayed Mosi2 tubes were measured via diametral compression of 0-ring and C-ring sections in air at room temperature. Qualification of the strength distribution was based on Weibull statistical theory.

Near-net-shape 95W–3.5Ni–1.5Fe thin-walled products produced by plasma spray forming

2010 ◽  
Vol 527 (21-22) ◽  
pp. 5782-5789 ◽  
Author(s):  
Y.M. Wang ◽  
X. Xiong ◽  
X.B. Min ◽  
L. Xie ◽  
F. Zheng
Keyword(s):  
Plasma Spray ◽  
Spray Forming ◽  
Plasma Spray Forming ◽  
Near Net Shape ◽  
Thin Walled

Vacuum Plasma Spray Forming of High Temperature Silicides

1993 ◽  
Vol 322 ◽  
Author(s):  
S. Sampath ◽  
H. Herman
Keyword(s):  
High Temperature ◽  
Plasma Spray ◽  
Molybdenum Disilicide ◽  
Spray Forming ◽  
Vacuum Plasma Spray ◽  
Plasma Spray Forming ◽  
Fine Grained ◽  
Vacuum Plasma ◽  
Near Net Shape ◽  
Relationship Of

AbstractMolybdenum disilicide and its composites have been fabricated by a number of researchers in recent years through vacuum plasma spray (VPS) forming. VPS is capable of producing dense, fine grained deposits of these high temperature intermetallics and is a promising technique for near-net-shape manufacturing. Reviewed here is VPS forming of high temperature silicide intermetallics, principally Mosi2 and its composites. A discussion will be given of the processing-structure-properties relationship of the spray formed silicide.

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