Nanomechanical insights into the deformation behavior of austenitic alloys with different stacking fault energies and austenitic stability

Misra, R.D.K.; Zhang, Z.; Jia, Zhiyong; Surya, P.K.C. Venkat; Somani, Mahesh C.; Karjalainen, L.P.

doi:10.1016/j.msea.2011.05.068

Cited by 36 publications

(20 citation statements)

References 15 publications

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“… Recent works are trying to elucidate the austenite stability and deformation mechanisms through nanoindentation test [277,[355][356][357] in Fe-Mn-C and Fe-Mn-Al-C steels, and it is expected an accelerate progress in this direction for years to come.…”

Section: Oxidationmentioning

confidence: 99%

A general perspective of Fe–Mn–Al–C steels

Zambrano

2018

J Mater Sci

179

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During the last years, the scientific and industrial community have focused on the astonishing properties of Fe-Mn-Al-C steels. These high advanced steels allow high-density reductions about ~18% lighter than conventional steels, high corrosion resistance, high strength (ultimate tensile strength (UTS) ~1 Gpa) and at the same time ductility above 60%.The increase of the tensile or yield strength and the ductility at the same time is almost a special feature of this kind of new steels, which makes them so interesting for many applications such as in the automotive, armor and mining industry. The control of these properties depends on a complex relationship between the chemical composition of the steel, the test temperature, the external loads and the processing parameters of the steel. This review has been conceived to tried to elucidate these complex relations and gather the most important aspects of Fe-Mn-Al-C steels developed so far.

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Section: Oxidationmentioning

confidence: 99%

A general perspective of Fe–Mn–Al–C steels

Zambrano

2018

J Mater Sci

179

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“…In Figure 4a, there are marked areas where the film fails. The minimal loads that cause film failure are denoted in literature at LC1, LC2, and LC3 [28]. LC1 is the load that causes visible cracks in the film during indenter sliding, but the load is not enough to partially delaminate the film from the substrate.…”

Section: Scratch Testingmentioning

confidence: 99%

An Experimental Study on Nano-Carbon Films as an Anti-Wear Protection for Drilling Tools

et al. 2017

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Carbon thin films of 50-100 nm thickness were synthesized by Pulsed Laser Deposition in vacuum at different laser fluences from 2 to 6 J/cm 2 . The deposited films were characterized by Raman spectroscopy for compositional assessment, scanning electron microscopy for morphology/thickness evaluations, and X-ray reflectivity for density, thickness, and roughness determinations. The films were~100 nm thin, smooth, droplet-free, made of a-C:H type of diamond-like carbon. The mechanical properties of synthesized films were studied by nanoindentation and adhesion tests. The films that were obtained at low laser fluences (2, 3 J/cm 2 ) had better mechanical properties as compared to those synthesized at higher fluences. The mean values of hardness were around 20 GPa, while the friction coefficient was 0.06. The deposition conditions of carbon thin films that displayed the best mechanical properties were further used to coat commercial drills. Both uncoated and coated drills were tested on plates that were made of three types of steel: Stainless steel 304, general use AISI 572 Gr 65 steel (OL60), and AISI D3 tool steel (C120). All of the drill edges and tips were studied by optical and scanning electron microscopes. The coated samples were clearly found to be more resistant, and displayed less morphological defects than their uncoated counterparts when drilling stainless steel and OL60 plates. In the case of C120 steel, carbon coatings failed because of the high friction between drill and the metal plate resulting in tip edges blunting that occurred during processing.

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“…The pop-ins on the 1 dpa curve occur around 25-50 nm depth, whereas the one on the 10 dpa curve stays around 85 nm depth. Generally, the occurrence of pop-in phenomenon in metals can be attributed to several factors such as dislocation nucleation and propagation, crack formation or phase transformation [33][34][35][36].…”

Section: Nano-hardnessmentioning

confidence: 99%

Effect of Heavy Ion Irradiation Dosage on the Hardness of SA508-IV Reactor Pressure Vessel Steel

Bai

Liaw

et al. 2017

Metals

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Specimens of the SA508-IV reactor pressure vessel (RPV) steel, containing 3.26 wt. % Ni and just 0.041 wt. % Cu, were irradiated at 290 • C to different displacement per atom (dpa) with 3.5 MeV Fe ions (Fe 2+ ). Microstructure observation and nano-indentation hardness measurements were carried out. The Continuous Stiffness Measurement (CSM) of nano-indentation was used to obtain the indentation depth profile of nano-hardness. The curves showed a maximum nano-hardness and a plateau damage near the surface of the irradiated samples, attributed to different hardening mechanisms. The Nix-Gao model was employed to analyze the nano-indentation test results. It was found that the curves of nano-hardness versus the reciprocal of indentation depth are bilinear. The nano-hardness value corresponding to the inflection point of the bilinear curve may be used as a parameter to describe the ion irradiation effect. The obvious entanglement of the dislocations was observed in the 30 dpa sample. The maximum nano-hardness values show a good linear relationship with the square root of the dpa.

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Nanomechanical insights into the deformation behavior of austenitic alloys with different stacking fault energies and austenitic stability

Cited by 36 publications

References 15 publications

A general perspective of Fe–Mn–Al–C steels

A general perspective of Fe–Mn–Al–C steels

An Experimental Study on Nano-Carbon Films as an Anti-Wear Protection for Drilling Tools

Effect of Heavy Ion Irradiation Dosage on the Hardness of SA508-IV Reactor Pressure Vessel Steel

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