The Effect of Si and Mn on Microstructure and Selected Properties of Cr-Ni Stainless Steels

Kalandyk, B.; Zapała, R.; Starowicz, M.

doi:10.1515/afe-2017-0034

Cited by 2 publications

(4 citation statements)

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“…The latter may elucidate the exceptionally high strength of this alloy. As can be seen in Figure 5, a large number of dislocations were pinned via the Orowan mechanism (Lehtinen et al, 2016;Kalandyk et al, 2017), forming the main movement blocking; this represents the increase in strength. The precipitate size distribution seems to not depend on the lattice mismatch, which confirmed the finding of Tovar et al (2017).…”

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confidence: 96%

A New Precipitation Hardened Austenitic Stainless Steel Investigated by Electron Microscopy

Dani¹,

Dimiyati²,

Iskandar³

et al. 2018

IJTech

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The 56Fe16.6Cr25Ni0.9Si0.5Mn austenitic superalloy has been produced in an induction furnace; it was made from granular ferro-scrap, ferrochrome, ferrosilicon, and ferromanganese materials. Originally, this alloy had been proposed for use in high mechanical loads and high temperature conditions (such as in nuclear and fossil fuel power plant facilities). Tensile strength tests showed that the alloy has an average yield strength of about 430.56 MPa, which is higher than Incoloy A-286 (a commercially available alloy). A combination of microscopy techniques by means of an optical microscope, X-ray diffraction [XRD], scanning electron microscopy [SEM], and transmission electron microscopy [TEM] techniques were applied in order to get detailed information about the fine structure of the alloy. XRD confirmed that the alloy matrix exhibits an FCC crystal structure with a lattice parameter of about 3.60 Å and grain sizes ranging from 50 to 100 µm. The results of the TEM analysis revealed the new type of precipitations that formed at the grain boundaries. These needle-like precipitations, probably Fe/Cr-rich precipitations of the (Fe,Cr)xCy type, acted as the source of intergranular corrosion (IGC). Small coherent plate-like and much smaller granular precipitations were found distributed homogenously along grain boundaries and inside the grains. Combining the tensile strength test and microstructure analysis suggested that these precipitations play significant roles in the hardness of the investigated sample.

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confidence: 96%

A New Precipitation Hardened Austenitic Stainless Steel Investigated by Electron Microscopy

Dani¹,

Dimiyati²,

Iskandar³

et al. 2018

IJTech

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“…where: VCsample weight loss over time [mg/(dm 2 •day)], dmetal matrix density [g/cm 3 ] for GX120Mn13 (7.9 g/cm 3 ).…”

Section: Subject Scope and Methodologymentioning

confidence: 99%

“…Abrasive and corrosive wear of materials, due to the complexity of processes and technological and economic importance, has been the subject of research for many years [1][2][3]. This works show that it is not possible to develop a universal material that guarantees high abrasion resistance, while at the same time increased corrosion resistance, in all operating conditions.…”

Section: Introductionmentioning

confidence: 99%

“…This works show that it is not possible to develop a universal material that guarantees high abrasion resistance, while at the same time increased corrosion resistance, in all operating conditions. However, it was found that usually the higher the hardness of the material, the higher the abrasion resistance [1][2][3][4][5]. At the same time, increasing the hardness of the material causes a deterioration of its impact strength most often [5].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Corrosion on Wear Resistance of the Composite Based on GX120Mn13 Cast Steel Zonally Reinforced with Particles (Al2O3+ZrO2)

Medyński

2023

Archives of Foundry Engineering

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The subject of the work are modern composite materials with increased wear resistance intended for elements of machines operating in difficult conditions in the construction and mining industries. The study determined the effect of zone reinforcement of GX120Mn13 cast steel with macroparticles (Al2O3 + ZrO2) on the corrosion resistance and abrasion wear of the composite thus obtained. SEM studies have shown that at interface between two phases, and more precisely on the surface of particles (Al2O3 + ZrO2) a durable diffusion layers are formed. During the corrosion tests, no significant differences were found between the obtained parameters defining the corrosion processes of GX120Mn13 cast steel and GX120Mn13 with particles (Al2O3 + ZrO2) composite. No intergranular corrosion was observed in the matrix of the composite material, nor traces of pitting corrosion at both phases interface. This is very important in terms of tested material's service life. Reinforcement of cast steel with particles (Al2O3 + ZrO2) resulted in a very significant improvement in the abrasion resistance of the compositeby about 70%. After corrosion tests, both materials were subjected to further operational investigations. These examinations consisted in determining the impact of corrosion processes on the durability of the composite in terms of abrasion. The obtained results indicate that corrosion processes did not significantly deteriorate the wear resistance of both the cast steel and the composite.

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The Effect of Si and Mn on Microstructure and Selected Properties of Cr-Ni Stainless Steels

Cited by 2 publications

References 6 publications

A New Precipitation Hardened Austenitic Stainless Steel Investigated by Electron Microscopy

A New Precipitation Hardened Austenitic Stainless Steel Investigated by Electron Microscopy

Effect of Corrosion on Wear Resistance of the Composite Based on GX120Mn13 Cast Steel Zonally Reinforced with Particles (Al2O3+ZrO2)

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