Effect of Porosity Content on the Weldability of Powder Metal Parts Produced by Friction Stir Welding

2007 ◽  
Vol 534-536 ◽  
pp. 789-792 ◽  
Author(s):  
Adem Kurt ◽  
Ilyas Uygur ◽  
Hakan Ates
Keyword(s):  
Friction Stir Welding ◽  
Powder Metal ◽  
Aluminum Powders ◽  
Friction Stir ◽  
Metal Parts ◽  
Constant Friction ◽  
Sintered Powder ◽  
Hardness Values ◽  
Welding Technique ◽  
Traveling Speed

Friction stir welding technique (FSW) has many advantages in terms of tool design, rotational speed and traveling speed, and can be adjusted in a precise manner. It enables heat input into the system to be controlled. In this study, Aluminum powders were compacted at 350,400 and 450 MPa pressure and sintered at 450 oC temperature for 30 minutes in Ar atmosphere. Sintered powder metal parts were joined to each other by FSW at the speed of 1800 rpm and traveling welding speed 200 mm/min under a constant friction force. The results show that the amount of porosity affects the weldability of powder metallurgy (P/M) parts. Furthermore, the porosity and microstructural evolution of the Aluminum also affected the hardness values of the tested materials.

Plant for the manufacture of powder metal parts for instruments

1962 ◽  
Vol 1 (1) ◽  
pp. 53-59
Author(s):  
V. N. Klimenko ◽  
P. D. Radomysel'skii ◽  
Z. P. Dorf
Keyword(s):  
Powder Metal ◽  
Metal Parts

Effects of Temperature on the Weldability of Powder Metal Parts Joined by Diffusion Welding

2007 ◽  
Vol 546-549 ◽  
pp. 667-670 ◽  
Author(s):  
Adem Kurt ◽  
Ilyas Uygur ◽  
Hakan Ates
Keyword(s):  
Dwell Time ◽  
Welding Process ◽  
Dissimilar Materials ◽  
Bonding Process ◽  
Welding Parameter ◽  
Diffusion Welding ◽  
Powder Metal ◽  
Aluminium Composite ◽  
Metal Parts ◽  
Effects Of Temperature

Diffusion welding is an advanced bonding process in which similar or dissimilar materials can be bonded in solid state. In this study, aluminium composite (5% and 15% WC) powders were compacted at 450 MPa pressure and sintered at 550 oC for 45 minutes in argon atmosphere.and joined each other by diffusion bonding. The bonding temperatures (585 oC, 600 oC, 615 oC) and dwell time (185 min) were chosen for the welding process at constant 20 MPa. It has been observed that these variations on the welding parameter strongly affected the microstructure and the weldability of the materials.

ANCORSTEEL 2000

Alloy Digest ◽  
2010 ◽  
Vol 59 (10) ◽  
Keyword(s):  
Fracture Toughness ◽  
Powder Metallurgy ◽  
Physical Properties ◽  
Production Process ◽  
Tensile Properties ◽  
Molten Steel ◽  
Alloy Powder ◽  
Powder Metal ◽  
Metal Parts ◽  
Powder Production

Abstract Ancorsteel 2000 is a water atomized low-alloy powder metal containing Ni, Mo, and Mn and is useful in powder metal parts requiring greater hardenability. In the powder production process used to make Ancorsteel, molten steel is atomized into irregular, homogeneous particles which are then annealed to produce uniform, dependable steel powders. Ancorsteel grades are designed for powder metallurgy parts requiring densities exceeding 6.7 g/cm^3 (0.24 lb/in.^3). This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on powder metal forms. Filing Code: CS-157. Producer or source: Hoeganaes Corporation.

Non-Destructive Testing of Joints of Antifriction Parts Crimped by Pulsed Magnetic Deformation

2017 ◽  
Vol 267 ◽  
pp. 248-252
Author(s):  
Alexey Tatarinov ◽  
Viktor Mironov ◽  
Dmitry Rybak ◽  
Pavels Stankevich
Keyword(s):  
Flaw Detector ◽  
Non Destructive Testing ◽  
Powder Metal ◽  
Destructive Testing ◽  
X Ray ◽  
Metal Parts ◽  
Ultrasonic Flaw Detector ◽  
Ultrasonic Flaw ◽  
Non Destructive

Possibilities of non-destructive testing (NDT) methods to assess the quality of permanent joints of powder metal parts were evaluated. Antifriction bushing-bushing couples used in transport braking systems were investigated. The parts made of bronze graphite were crimped by pulsed magnetic deformation by means of electromagnetic equipment with a maximum discharge energy of 30 kJ. The gap between joint parts in the couples was assessed by ultrasonic and radiographic methods. A standard ultrasonic flaw detector Krautkramer USM-25 with an Olympus 4MHz dual-element echo transducer and an industrial x-ray apparatus YXLON EVO 200D were used, correspondingly. In first trial, both methods were equally sensitive to tight and weak connection of joints.

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