scholarly journals Microstructure and Mechanical Properties of Inconel 625 and 718 Alloys Processed by Powder Injection Molding

1994 ◽  
Author(s):  
J.J. Valencia ◽  
T. McCabc ◽  
K. Hens ◽  
J.O. Hansen ◽  
A. Bose
Keyword(s):  
Mechanical Properties ◽  
Injection Molding ◽  
Powder Injection Molding ◽  
Inconel 625 ◽  
Powder Injection ◽  
Microstructure And Mechanical Properties

Microstructure, Hardness, and Wear Resistance of Powder-Injection-Molded Products of Fe-Based Metamorphic Powders

2007 ◽  
Vol 26-28 ◽  
pp. 355-358
Author(s):  
Chang Kyu Kim ◽  
Chang Young Son ◽  
Dae Jin Ha ◽  
Tae Sik Yoon ◽  
Sung Hak Lee
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Wear Resistance ◽  
Injection Molding ◽  
Powder Injection Molding ◽  
Powder Injection ◽  
Thermally Stable ◽  
Austenitic Matrix ◽  
Amorphous Phases ◽  
Injection Molded

Powder injection molding (PIM) process was applied to Fe-based metamorphic alloy powders, and microstructure, hardness, and wear resistance of the PIM products were analyzed and compared with those of conventional PIM stainless steel products. When Fe-based metamorphic powders were injection-molded and then sintered at 1200 oC, completely densified products with almost no pores were obtained. They contained 34 vol.% of (Cr,Fe)2B borides dispersed in the austenitic matrix without amorphous phases. Since these (Cr,Fe)2B borides were very hard and thermally stable, hardness, and wear resistance of the PIM products of Fe-based metamorphic powders were twice as high as those of conventional PIM stainless steel products. Such property improvement suggested new applicability of the PIM products of Fe-based metamorphic powders to structures and parts requiring excellent mechanical properties.

scholarly journals An Analysis of Rheological Properties of Inconel 625 Superalloy Feedstocks Formulated with Backbone Binder Polypropylene System for Powder Injection Molding

2017 ◽  
Vol 62 (4) ◽  
pp. 1937-1944 ◽  
Author(s):  
U. Gökmen ◽  
M. Türker
Keyword(s):  
Injection Molding ◽  
Average Particle Size ◽  
Three Dimensional ◽  
Powder Injection Molding ◽  
Inconel 625 ◽  
Powder Injection ◽  
Shear Stresses ◽  
Average Particle ◽  
Space Industry ◽  
Inconel 625 Superalloy

Abstract Binder formula is one of the most significant factors which has a considerable influence on powder injection molding (PIM) processes. In the study, rheological behaviors and properties of different binder systems containing PIM feedstocks, Inconel 625 powder commonly used in space industry, were investigated. The feedstocks were prepared 59%-69% (volume) powder loading ratios with three diversified binder systems by use of Polypropylene as backbone binder. The average particle size of the Inconel 625 powder used was 12.86 microns. Components used in the binder were mixed for 30 minutes as dry in three dimensional mixing to prepare binder systems. Rheological features of the feedstock were characterized by using a capillary rheometer. Viscosities of the feedstocks were calculated within the range of 37.996-1900 Pa.s based on the shear rate, shear stress, binder formula and temperature. “n” parameters for PIM feedstocks were determined to be less than 1. Influences of temperature on the viscosities of the feedstocks were also studied and “Ea” under various shear stresses were determined within the range of 24.41-70.89 kJ/mol.

Densification and mechanical properties of boron carbide with micro-hole array by micro-powder injection molding

2014 ◽  
Vol 40 (6) ◽  
pp. 7915-7921 ◽  
Author(s):  
Chang-rui Wang ◽  
Hong Xiao ◽  
Kui-wu Shao ◽  
Zhen Lu ◽  
Kai-feng Zhang
Keyword(s):  
Mechanical Properties ◽  
Injection Molding ◽  
Boron Carbide ◽  
Powder Injection Molding ◽  
Powder Injection ◽  
Hole Array ◽  
Micro Hole
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