Thermal fatigue evaluation of AISI H13 steels surface modified by gas nitriding with pre- and post-shot peening

Liu, Bin; Wang, B.; Yang, Xudong; Zhao, Xingfeng; Qin, Ming; Gu, Jianfeng

doi:10.1016/j.apsusc.2019.03.291

Cited by 29 publications

(7 citation statements)

References 30 publications

(52 reference statements)

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“…During the working circumstance, the surface hardness of mould decreases [2], and wear will be accelerated by thermal softening [3][4][5], which shortens its service life. In order to enhance the hardness of mould, protective coatings have been widely used to protect the mould from wear [6][7][8][9][10], which has a positive effect on prolonging the service life of mould and reducing the production cost [11,12].…”

Section: Introductionmentioning

confidence: 99%

Tribological performance of plasma nitrided H13 mould steel at elevated temperatures

Dejun

2023

Materials Science and Technology

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A nitrided layer was prepared on H13 mould steel by plasma nitriding. The characteristics of obtained nitrided layer were analysed using an ultra-depth of field microscope, atomic force microscope and X-ray diffraction, and the effect of elevated temperature on the wear performance was investigated using a ball-on-disk wear tester. The results show that the nitrided layer is composed of ϵ-Fe2-3N and γ′-Fe4N phases, which increases the substrate hardness by 111%. The nitrided layer at 800° exhibits superior friction reduction and wear resistance, and the wear mechanism is oxidative wear, which is contributed to the wear-resistant protective layer on the worn track.

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Section: Introductionmentioning

confidence: 99%

Tribological performance of plasma nitrided H13 mould steel at elevated temperatures

Dejun

2023

Materials Science and Technology

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“…Figure 1 shows the application of accelerating nitriding in the field of wind power. Among these processes, process parameter optimization [18,37,38], surface mechanical nano-crystallization [39][40][41], surface active catalysis [42][43][44], surface pre-oxidation [45][46][47], and surface laser treatment [48][49][50] are relatively common accelerating nitriding methods. The development of accelerating nitriding methods is also expected to expand its application in other fields.…”

Section: Introductionmentioning

confidence: 99%

A Review—Effect of Accelerating Methods on Gas Nitriding: Accelerating Mechanism, Nitriding Behavior, and Techno-Economic Analysis

Zhou,

Xia,

Xie

et al. 2023

Coatings

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Gas nitriding, as a surface modification technology to improve the wear resistance of workpiece surfaces, is widely used in wind turbine gears, pressure vessel gears, high-precision die casting abrasives, and other areas. However, the gas nitriding time is too long, reaching 40–60 h, which reduces the efficiency of nitriding and hinders the development of gas nitriding. Therefore, various accelerating methods are born accordingly. This review first introduces the basic principle, microstructure, and process parameters of conventional gas nitriding. Then, five common accelerating methods are summarized: process parameter optimization, surface mechanical nano-crystallization, surface-active catalysis, surface pre-oxidation, and surface laser treatment. Then, the effect of acceleration methods on gas nitriding is analyzed for the acceleration mechanism, nitriding behavior, and nitriding efficiency. Finally, the technical economy of the acceleration methods is compared for three aspects: energy consumption, carbon dioxide emission, and cost. And, the technical maturity of the acceleration methods is compared according to technology readiness level (TRL) technology. Based on the above content, the advantages and disadvantages of the five accelerating methods are reviewed, and the concept of a multi-technology collaborative processing acceleration method is proposed.

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“…Hence, these steels are extensively used for manufacturing forging dies, pressure die casting tools, and extrusion tools [ 4 ]. However, in spite of their outstanding mechanical properties, these steel tools suffer from severe damage when they are subjected to thermal [ 5 ], mechanical [ 6 ], and tribological [ 7 ] fatigue loads, which cause the initiation and propagation of cracks and eventually the fracture of these tools [ 8 ]. The fracture of hot forging tools is a crucial issue for many industrial sectors since it requires large annual investment in maintenance and tool replacement [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

An Experimental Analysis of the High-Cycle Fatigue Fracture of H13 Hot Forging Tool Steels

et al. 2022

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In this study, the axial fatigue behaviour of hot forging tool steels at room temperature was investigated. Fatigue tests were performed on two steels within the same H13 specification. The fatigue tests were carried out in the high-cycle fatigue domain under normal conditions. These tests were also performed on specimens in contact with a corrosive medium, applying stress values that led to the high-cycle fatigue domain under normal conditions for the sake of comparison. Both materials showed similar fatigue strengths when they were tested under normal conditions. In contrast, corrosion fatigue lives were much lower than in normal tests and differed significantly between the two steels. Crack initiation was triggered by microstructural and surface defects in the normal tests, whereas the formation of corrosion pits caused crack initiation in the corrosion fatigue tests. Moreover, a fracture surface analysis revealed dissimilar crack propagation areas between both steels, which suggested that both steels had different fracture toughness. These results were in line with the differences observed between the carbide and grain sizes of both of the material microstructures.

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Thermal fatigue evaluation of AISI H13 steels surface modified by gas nitriding with pre- and post-shot peening

Cited by 29 publications

References 30 publications

Tribological performance of plasma nitrided H13 mould steel at elevated temperatures

Tribological performance of plasma nitrided H13 mould steel at elevated temperatures

A Review—Effect of Accelerating Methods on Gas Nitriding: Accelerating Mechanism, Nitriding Behavior, and Techno-Economic Analysis

An Experimental Analysis of the High-Cycle Fatigue Fracture of H13 Hot Forging Tool Steels

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