Correlation between fracture mechanisms and microstructure in Mn powder metallurgy steels susceptible to intergranular failure

Gélinas, Simon; Baïlon-Poujol, Ian; Blais, Carl

doi:10.1016/j.msea.2018.06.023

Cited by 4 publications

(3 citation statements)

References 20 publications

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“…Some fluctuations of the stress were observed in the plastic region. This phenomenon is probably related to the pores connections and the growth of the cracks [30,52]. The pores formed between the agglomerated iron particles were the places of potential crack initiation and its propagation through the grain boundaries and matrix of Pm steel [48].…”

Section: Mechanical Propertiesmentioning

confidence: 99%

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Archives of Metallurgy and Materials

Sazegaran,

Bahari,

Naserian-Nik

et al. 2021

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And mechAnIcAl ProPerTIes of Powder meTAllurgy sTeelsan experimental study was performed to assess the influences of aluminum content on the porosity, microstructure and mechanical properties of powder metallurgy steels. optical microscope equipped with the image processing software and the scanning electron microscope were employed to study the microstructure of investigated specimens. in order to find mechanical properties of specimens, Vickers hardness and compression tests were conducted. By increasing the aluminum content (from 0 to 4 wt. %), the porosity increases (from 6.01% to 8.43%). The microstructure of specimens contains aluminum phase distributed between the boundaries of agglomerated iron particles, ferrite, and pearlite. By increasing the aluminum content, stress-strain curves shift significantly downwards, and the modulus of elasticity, elongation, yield stress, and Vickers hardness reduce from 1.82 to 0.86 gPa, 32.1 to 17.8%, 138.1 to 28.2 mPa, and 127.7 to 26.8 HV, respectively.

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Section: Mechanical Propertiesmentioning

confidence: 99%

“…in the sintered Fe-mn-C low alloy steels, the addition of manganese causes to improve the mechanical properties [29]. The formation of mn-oxide inclusions in sintered neck regions decreases the mechanical properties [30]. in the sintered mn-Si steels, the formation of mn-Si oxide inclusions depends on the sintering conditions [31].…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Sazegaran,

Bahari,

Naserian-Nik

et al. 2021

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“…Manganese is also used in Fe and Fe-based PM components and Mn possesses similar characteristics to Cr. Manganese, which has been adopted as a cheap alloying element to reduce production costs, and Mn-containing PM components exhibit comparable performance as components with other alloying elements [27]. With the continuously increasing price of Cu, Mo, Ni, and other metals, Mn has become a competitive alloying element in PM components because of its low price.…”

Section: Introductionmentioning

confidence: 99%

Effect of Boron Additions on the Microstructural Evolution and Properties of Fe-Mo-Cu-Ni-C Sintered Steel

Liu,

Wang,

Yuan

et al. 2023

Materials

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The effects of different boron (B) additions from 0 to 0.5 wt.% on the microstructure and properties of Fe-Mo-Cu-Ni-xB-C powder metallurgy (PM) steels were investigated in this work. The results indicated that the ferrite phase quantity decreased and disappeared, Ni/Cu became more homogeneous, and M2B phase formed, with the addition of B. The density and hardness of the sintered steels monotonously increased with increasing B content, whereas the tensile strength and impact toughness first increased and then decreased. The tensile strength of the steels reached a maximum value of 1097 MPa at a 0.2% B content, whereas the impact toughness reached a maximum value of 25.7 J/cm2 at a 0.1% B content and then sharply decreased when the B content exceeded 0.2%. Frictional wear experiments showed that the weight loss of the steels decreased with an increasing B content under low load conditions (100 N), and the lowest weight loss of 0.043 g occurred at a 0.2% B content. Under high load conditions (200 N), the 0.1% B content steel saw the lowest weight loss 0.075 g, exhibiting excellent wear resistance, but the abrasive resistance of the steels decreased with a further increase in the B content due to the germination of microcracks and large spalling caused by the high hardness and brittleness.

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Influence of chloride deposition rate on rust layer protectiveness and corrosion severity of mild steel in tropical coastal atmosphere

Chen

Cui

et al. 2021

Materials Chemistry and Physics

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Correlation between fracture mechanisms and microstructure in Mn powder metallurgy steels susceptible to intergranular failure

Cited by 4 publications

References 20 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Effect of Boron Additions on the Microstructural Evolution and Properties of Fe-Mo-Cu-Ni-C Sintered Steel

Influence of chloride deposition rate on rust layer protectiveness and corrosion severity of mild steel in tropical coastal atmosphere

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