Microstructure and mechanical behavior of porous sintered steels

N Chawla, X Deng - Materials Science and Engineering: A, 2005 - Elsevier
The microstructure and mechanical properties of sintered Fe–0.85 Mo–Ni steels were
investigated as a function of sintered density. A quantitative analysis of microstructure was …

A review of failure of sintered steels: fractography of static and dynamic crack nucleation, coalescence, growth and propagation

E Dudrova, M Kabátova - Powder Metallurgy, 2016 - Taylor & Francis
The failure of sintered steels differs from the behaviour of wrought steels because of factors
such as porosity, remnants of previous particle surfaces and generally more complex …

Fatigue crack initiation and propagation of binder-treated powder metallurgy steels

SJ Polasik, JJ Williams, N Chawla - Metallurgical and Materials …, 2002 - Springer
Many of the targeted applications for powder-metallurgy materials, particularly in the
automotive industry, undergo cyclic loading. It is, therefore, essential to examine the fatigue …

Effect of density and pore morphology on fatigue properties of sintered Ti–6Al–4V

Y Yan, GL Nash, P Nash - International Journal of Fatigue, 2013 - Elsevier
The fatigue properties of sintered Ti–6Al–4V were investigated as a function of sintered
density and pore morphology. A quantitative analysis of microstructure was conducted to …

Elucidation of pore connection mechanism during ductile fracture of sintered pure iron by applying persistent homology to 4D images of pores: Role of open pore

I Ando, Y Mugita, K Hirayama, S Munetoh… - Materials Science and …, 2021 - Elsevier
Abstract 4D pore configurations including an open pore were visualized by synchrotron X-
ray laminography during the ductile fracturing process and then interpreted quantitatively …

Microcrack nucleation, growth, coalescence and propagation in the fatigue failure of a powder metallurgy steel

M Kabatova, E Dudrova… - Fatigue & Fracture of …, 2009 - Wiley Online Library
Detailed quantitative micrographic data are presented for Stages I and II of a Powder
Metallurgy Fe‐1.5 Cr‐0.2 Mo‐0.7 C steel specimen fatigued in bending with R=− 1 at 24 Hz …

Effect of porosity and tension–compression asymmetry on the Bauschinger effect in porous sintered steels

X Deng, GB Piotrowski, JJ Williams… - International journal of …, 2005 - Elsevier
The Bauschinger effect is a common phenomenon in metallic materials. In this paper, the
Bauschinger effect in Fe–0.85 Mo–2Ni powder metallurgy (PM) steel was investigated for …

Bauschinger effect in porous sintered steels

N Chawla, B Jester, DT Vonk - Materials science and engineering: A, 2003 - Elsevier
The Bauschinger effect was investigated in a sintered Fe–Mo steel by conducting load
reversal experiments in tension followed by compression and vice-versa. A significant …

In-Situ Observations on the Fracture Mechanism of Diffusion-Alloyed Ni-Containing Powder Metal Steels and a Proposed Method for Tensile Strength Improvement

MW Wu, KS Hwang, HS Huang - Metallurgical and Materials Transactions …, 2007 - Springer
The mechanical properties of Ni-containing powder metal (PM) steels are usually inferior to
those of their wrought counterparts. The main problem is attributed to the non-uniform Ni …

THREE-DIMENSIONAL CHARACTERIZATION AND MODELING OF POROSITY IN PM STEELS.

N Chawla, JJ Williams, X Deng… - … Journal of Powder …, 2009 - search.ebscohost.com
The article offers information on the three-dimensional characterization and modeling of
porosity in powder metallurgy (PM) steels. It notes the presence of residual porosity in …