Sintered materials based on iron powders obtained from the rolling scale of 17GS and 10KhsND steels

1970 ◽  
Vol 9 (7) ◽  
pp. 568-571
Author(s):  
V. Ya. Bulanov ◽  
A. V. Mikhailichenko ◽  
G. F. Mokshantsev ◽  
N. E. Rysyukov ◽  
Yu. A. Sedach
Keyword(s):  
Iron Powders ◽  
Rolling Scale ◽  
Sintered Materials

scholarly journals Are Large Particles of Iron Detrimental to Properties of Powder Metallurgy Steels?

Metals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 431
Author(s):  
Ahmed Abdallah ◽  
Mahdi Habibnejad-Korayem ◽  
Dmitri V. Malakhov
Keyword(s):  
Powder Metallurgy ◽  
Apparent Density ◽  
Heavy Tail ◽  
Number Density ◽  
Iron Powders ◽  
Distribution Histogram ◽  
Compositional Uniformity ◽  
Large Particles ◽  
Size Distribution Histogram ◽  
Sintered Materials

It is experimentally shown that a removal of particles exceeding 100 microns in size from iron powders typically used in the fabrication of medium density powder metallurgy steels has a weak effect on apparent density, flowability and compressibility of blends as well as on density and strength of green bodies. An elimination of such particles, i.e., cutting off a heavy tail of a size distribution histogram at the 100 μm threshold, improves a compositional uniformity of sintered materials, but has no noticeable beneficial effect upon the strength of a final product, which is likely be determined by a fraction of pores and their shapes. A presence of soft pearlitic inclusions hardly matters unless their number density becomes so large that a 3D continuity (integrity) of a hard martensitic matrix is lost. This finding suggests that such an expensive preparatory step as sieving away large particles from as-received mixtures would bear no technological advantages. It was experimentally found that an attempt to lower the threshold below 100 μm noticeably worsened apparent density, flowability and compressibility.

About Forecasting Durability of Particles of Iron Powders and Sintered Materials

2008 ◽  
Vol 273-276 ◽  
pp. 181-185
Author(s):  
A.N. Dmitriev ◽  
V.I. Bulanov
Keyword(s):  
Mechanical Characteristics ◽  
Complex Form ◽  
Physicomechanical Properties ◽  
Initial Material ◽  
Iron Powders ◽  
Technological Processes ◽  
Microhardness Testing ◽  
Definition Of ◽  
Limiting Values ◽  
Sintered Materials

Equations for an estimation of hardness and durability of materials of particles of iron powders in various zones are received. The opportunity of reception of materials with physicomechanical properties above separate zones of particles is shown. By development of technological processes of manufacturing sintered details with demanded physicomechanical properties it is necessary to know the physical characteristics of particles of an initial material, and sintered ensemble with them and their possible limiting values. However, definition of separate mechanical characteristics of particles is impossible because of their small sizes and complex form. Authors attempt to define strength and fluidity of various zones of particles of iron powders and sintered materials on their basis, using a method of microhardness testing.

Mechanical Processing of Sintered Materials

2020 ◽  
Author(s):  
Saranjit Singh ◽  
Polymersetty Chandrasekhar
Keyword(s):  
Mechanical Processing ◽  
Sintered Materials

ANCORSTEEL PHOSPHORUS ALLOYS

Alloy Digest ◽  
2016 ◽  
Vol 65 (2) ◽  
Keyword(s):  
Coercive Force ◽  
Physical Properties ◽  
Tensile Properties ◽  
Powder Metal ◽  
Iron Powders ◽  
Electromagnetic Performance

Abstract Ancorsteel phosphorus alloys are ferrous base powders for PM parts requiring superior electromagnetic performance. Compared with parts made from pure, high compressibility iron powders, those made from the phosphorus alloys have higher resistivity, permeability and induction, and reduced coercive force. The presence of phosphorus also decreases the susceptibility of a PM component to nitrogen aging. These alloys are produced by making ferrophosphorus additions to the highly compressible iron powders Ancorsteel 1000B or Ancorsteel 1000C. This datasheet provides information on physical properties, and tensile properties. It also includes information on powder metal forms. Filing Code: CS-196. Producer or source: Hoeganaes Corporation.

On the thermoluminescence properties and mechanism of LuPO4:Eu sintered materials

RSC Advances ◽  
2016 ◽  
Vol 6 (92) ◽  
pp. 89019-89027 ◽  
Author(s):  
J. Zeler ◽  
E. Zych
Keyword(s):  
Processing Parameters ◽  
Sintered Materials

Thermoluminescence (TL) of X-rayed LuPO4:Eu sintered materials was investigated as a function of the processing parameters and Eu concentration.

Effect of thermal insulation on microstructural homogeneity and onset temperature of flash sintered materials

2021 ◽  
Vol 41 (15) ◽  
pp. 7807-7815
Author(s):  
Ana G. Storion ◽  
Isabela R. Lavagnini ◽  
João V. Campos ◽  
João G.P. da Silva ◽  
Sylma C. Maestrelli ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Onset Temperature ◽  
Sintered Materials ◽  
Microstructural Homogeneity
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