Sequential nucleation of phases in a 17-4PH steel: Microstructural characterisation and mechanical properties

Yeli, Guma; Auger, M.A.; Wilford, K.; Smith, G.D.W.; Bagot, Paul A.J.; Moody, Michael P.

doi:10.1016/j.actamat.2016.11.052

Cited by 137 publications

(69 citation statements)

References 41 publications

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“…Those properties are obtained after an ageing heat treatment, following a solution annealing heat treatment and quenching, the ultimate tensile strength and fracture toughness values being controlled by the temperature and duration of the ageing [1]. During the ageing, significant hardening occurs due to the precipitation of fine Cu-rich precipitates in martensitic laths [2][3][4][5][6]. However, other microstructural changes occur, i.e.…”

Section: Introductionmentioning

confidence: 99%

Pitting corrosion of 17-4PH stainless steel manufactured by laser beam melting

et al. 2020

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The pitting corrosion behaviour of a 17-4PH martensitic stainless steel (MSS) manufactured by power bed laser beam melting (LBM) was compared to that of a wrought MSS. More noble pitting potentials were measured for LBM samples, probably due to a smaller size of NbCs as compared to wrought MSS. The metastable pits were less numerous, but had a higher nucleation rate and longer life time for the LBM samples compared to the wrought MSS. This was explained by assuming a decrease in the repassivation ability of LBM samples due to small gas pores.

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Section: Introductionmentioning

confidence: 99%

Pitting corrosion of 17-4PH stainless steel manufactured by laser beam melting

et al. 2020

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“…There is a need for detailed study of microstructure formed during aging of 17-4 PH steel welds, in particular the research of the welded joints in terms of reversed austenite. Most of the previous studies on steel 17-4PH were focused on the effects of aging on the microstructure and mechanical properties of the base material [23][24][25][26][27][28]. Only a few reports were related to the weld of the material [5,17,[29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Microstructure Characterization of Welds in X5CrNiCuNb16-4 Steel in Overaged Condition

Ziewiec

Zielińska‐Lipiec

Kowalska

et al. 2019

Advances in Materials Science

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The paper presents the results of the investigation of microstructure of the welded X5CrNiCuNb16-4 (17-4PH) steel after solution treatment and aging at 620°C for different periods. The microstructure and the phase composition of the steel was investigated using light microscopy (LM), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), transmission electron microscopy (TEM) and the X-ray diffraction (XRD). Hardness was measured for samples aged at different times. Density distributions of Cu precipitates were established. The investigation has shown that the microstructure of the X5CrNiCuNb16-4 steel welds after aging at 620 ° C consists of tempered martensite, fine Cu precipitates and austenite. It was observed that the size of the Cu precipitates increases with increasing the aging time, what affects the decrease of hardness. Simultaneously, the quantity of reversed austenite increases with increase of aging time. It was revealed that enrichment of the austenite in Ni, Cu and C affects the increase of Ms, but this factor does not determine the stability of austenite.

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“…With the characteristics of anti-corrosion, resist-to-abrasion and high mechanical strength, 05Cr17Ni4Cu4Nb martensitic stainless steel is widely used in structural components of the equipment in marine construction, chemical industries and power plants with a year-to-year consumption increase [1]. Recently, many studies about 05Cr17Ni4Cu4Nb martensitic stainless steel focus on its heat treatment processes, surface coating methods or the properties during additive manufacturing [2][3][4][5]. Generally, hot forging process is the effective method to form the shape and refine the grains for the parts made of 05Cr17Ni4Cu4Nb steel.…”

Section: Introductionmentioning

confidence: 99%

“…Based on equation(5), X drx is calculated from the experimental flow stress data. The relationship between -According to the slope and intercept of the fitted line,…”

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confidence: 99%

Flow stress modeling, processing maps and microstructure evolution of 05Cr17Ni4Cu4Nb Martensitic stainless steel during hot plastic deformation

Zhou

Feng

et al. 2020

Mater. Res. Express

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The hot deformation behavior of 05Cr17Ni4Cu4Nb stainless steel at the temperatures from 950°C to 1250°C and strain rates from 0.01 s −1 to 5 s −1 was investigated on the basis of test data obtained by Gleeble1500D thermo-simulation machine. A two-stage flow stress constitutive model incorporating the effects of the strain rate and temperature on the deformation behavior is proposed. The stressstrain relations of 05Cr17Ni4Cu4Nb steel predicted by the proposed model agree well with the experimental results. Moreover, the hot processing maps are also investigated. Combined with the microstructure evolution analysis, the appropriate hot forming processing parameters of 05Cr17Ni4-Cu4Nb steel is proposed in the temperature range of 1000-1100°C and strain rate range of 0.01-0.02 s −1 .

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Sequential nucleation of phases in a 17-4PH steel: Microstructural characterisation and mechanical properties

Cited by 137 publications

References 41 publications

Pitting corrosion of 17-4PH stainless steel manufactured by laser beam melting

Pitting corrosion of 17-4PH stainless steel manufactured by laser beam melting

Microstructure Characterization of Welds in X5CrNiCuNb16-4 Steel in Overaged Condition

Flow stress modeling, processing maps and microstructure evolution of 05Cr17Ni4Cu4Nb Martensitic stainless steel during hot plastic deformation

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