Effect of Nb Addition to Ti-Bearing Super Martensitic Stainless Steel on Control of Austenite Grain Size and Strengthening

Abstract

We investigated the temporal degradation of glass moulding dies, made of cemented tungsten carbide coated with PtIr on an adhesive Cr or Ni interlayer, by electron microscopy and atom probe tomography. During the exposure treatments at 630 • C under an oxygen partial pressure of 1.12 × 10 −23 bar, Cr (Ni) was found to diffuse outwards via grain boundaries in the PtIr, altering the surface morphology. Upon dissolution of the interlayer, the WC substrate also started degrading. Extensive interdiffusion processes involving PtIr, Cr (Ni) and WC took place, leading to the formation of intermetallic phases and voids, deteriorating the adhesion of the coating.

Thermal Treatment Effect on Tribological and Corrosion Performances of 13Cr5Ni2Mo Super-Martensitic Stainless Steel

“…Precipitation of carbides may occur both at grain boundaries and within the grains. This microstructure was encountered and described by many researchers [1,8,12]. The hardness value measured after the heat treatment was found to be 26 ±2 HRC, while the range of yield strength and tensile strength were found to be (850 ±2MPa) and (950 ±2MPa)…”

“…Alloying elements provide fine martensitic microstructure strengthened by carbide precipitations and avoid embrittlement during long term operation as reported by numerous works [1][2][3]. Nickel and Molybdenum are added for increasing resistance against pitting corrosion [4] while elements such as Ti, Nb and V are usually added to react with carbon individually, or react RESEARCH with both carbon and nitrogen to form carbides and carbo-nitrides respectively resulting in an increase in strength [1].…”

Effect of heat treatment process on precipitation of V microalloyed steel

“…The addition of Cr makes steel stronger and harder, and Cr can also improve the corrosion resistance of the steel [18,19]. Generally speaking, the role of strong carbide-forming elements, Ti, Nb, and V, is to refine the grains and strengthen the precipitation of phases [20,21]. Owing to its high melting temperature, Ti refines grains by forming carbonitrides and preventing grain growth at high temperatures [22,23].…”

Effect of compressive residual stress on wear resistance of IGT25+ gas turbine compressor blades made of 1.4923 steel

“…[1] Prediction of fatigue performance in gas turbine… [2] Effects of surfaces nanocrystallization… [3] Effect of Nb addition to Ti-bearing… [4] Residual stresses and martensite transformation… [5] Thermal treatment effect on tribological… [6] Stress corrosion behavior of 12Cr martensite steel… [7] ASM Metals Handbook, Surface Engineering. [8] Effect of shot peening on surface residual stress… [9] Effective X-ray elastic constant measurement… [10] Effect of carbide distribution… [11] Sliding wear behaviour of surface… [12] Effect of heat treatment on microstructure… [13] Potential of martensitic… [14] Effect of Nb addition to Ti-bearing super martensitic… [15] Failure analysis of warm stamping of magnesium alloy… [16] Surface modification of oilfield alloys… [17] Effects of water cavitation peening… [18] Influence of severe shot peening on the surface state… [19] Evolution of a laser shock peened residual stress... [20] Effect of laser shock peening on fatigue life... [21] The effect of shot peening … [22] Accuracy of X-ray diffraction… [23] X-ray diffraction residual stress techniques.…”

“…[1] Prediction of fatigue performance in gas turbine… [2] Effects of surfaces nanocrystallization… [3] Effect of Nb addition to Ti-bearing… [4] Residual stresses and martensite transformation… [5] Thermal treatment effect on tribological… [6] Stress corrosion behavior of 12Cr martensite steel… [7] ASM Metals Handbook, Surface Engineering. [8] Effect of shot peening on surface residual stress… [9] Effective X-ray elastic constant measurement… [10] Effect of carbide distribution… [11] Sliding wear behaviour of surface… [12] Effect of heat treatment on microstructure… [13] Potential of martensitic… [14] Effect of Nb addition to Ti-bearing super martensitic… [15] Failure analysis of warm stamping of magnesium alloy… [16] Surface modification of oilfield alloys… [17] Effects of water cavitation peening… [18] Influence of severe shot peening on the surface state… [19] Evolution of a laser shock peened residual stress... [20] Effect of laser shock peening on fatigue life... [21] The effect of shot peening … [22] Accuracy of X-ray diffraction… [23] X-ray diffraction residual stress techniques. [24] Investigation of surface residual stress profile… [25] X-ray stress measurements in the institute of aviation… [26] Effect of shot peening on the residual stress… [27] Effects of low intensity shot peening… [28] Residual stressaffected diffusion… [29] Dislocation-based study on the influences of shot peening… [30] The effect of shot peening on stress corrosion… [31] On modeling hydrogen-induced… [32] Surface textural features… [33] Dose to the contralateral breast from radiotherapy and risk… [34] Effects of different shot peening… [35] Elements of X-ray Diffraction.…”