Effect of Grain Boundary Engineering on the Work Hardening Behavior of AL6XN Super-Austenitic Stainless Steel

Guan, Xianjun; Jia, Zipeng; Varkani, M. A. Nozzari; Li, X. W.

doi:10.1007/s40195-022-01493-5

Cited by 4 publications

(2 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 62 ] Changing grain boundary characteristics to improve grain boundary strength is called grain boundary engineering (GBE). [ 63 ] GBE is usually achieved through hot working. In this study, all specimens were prepared under the same welding parameters, and no other special heat treatment was carried out on the specimens.…”

Section: Discussionmentioning

confidence: 99%

Study on the High Temperature Tensile Properties and Strengthening Mechanism of Nitrogen Containing Nickel‐Based Deposited Metals

Dai,

Su,

Wang

et al. 2024

Adv Eng Mater

View full text Add to dashboard Cite

This article investigates the tensile properties and strengthening mechanism of nitrogen‐containing nickel‐based flux cored welding wire deposited metal from room temperature to 900 °C. The results showed that the high‐temperature strength of the deposited metal increased with the addition of Tungsten and Nitrogen. When the temperature reaches 700 °C, M23C6 carbides begin to decompose. The alloying elements dissolve back into the matrix, and the solid solution strengthening effect minimizes the plasticity of the alloy. More carbonitrides are precipitated within the crystal with temperature. During high‐temperature deformation, carbonitrides fractures at the interface with the substrate due to difficulty in coordinating deformation. Therefore, the crack source formed greatly reduces the strength of the material. In addition, the stacking faults present in the low‐temperature zone have a significant impact on the work hardening of materials. The main deformation mechanism is the unit dislocation a/2 < 110> cutting precipitation phase. It can be observed that the dislocation cutting precipitation mechanism system has transformed into a dislocation bypassing precipitation mechanism system at intermediate. Finally, the anomalous yield strength (YS) and intermediate temperature brittleness phenomenon are reasonably explained. The main deformation mechanism gradually transforms into dislocation slip and climbing with temperature.

show abstract

Section: Discussionmentioning

confidence: 99%

Study on the High Temperature Tensile Properties and Strengthening Mechanism of Nitrogen Containing Nickel‐Based Deposited Metals

Dai,

Su,

Wang

et al. 2024

Adv Eng Mater

View full text Add to dashboard Cite

show abstract

“…Among the low-ΣCSL boundaries, the Σ3 n ( n = 1, 2, 3) twin boundaries account for the highest proportion. These boundaries possess lower interface energy and higher atomic ordering compared to random grain boundaries (Σ > 29), showing attractive performance in terms of ductility [ 6 , 10 , 11 ], fracture [ 12 , 13 ], oxidation resistance [ 14 ], corrosion resistance [ 15 , 16 ], sensitization [ 17 , 18 ], solute segregation resistance [ 19 ], and creep resistance [ 20 ]. Hence, the pursuit of a high proportion of Σ3 n twin boundaries and a suitably disrupted random boundary network in microstructures has become the research focus of optimizing GBCD.…”

Section: Introductionmentioning

confidence: 99%

A Review on Controlling Grain Boundary Character Distribution during Twinning-Related Grain Boundary Engineering of Face-Centered Cubic Materials

et al. 2023

View full text Add to dashboard Cite

Grain boundary engineering (GBE) is considered to be an attractive approach to microstructure control, which significantly enhances the grain-boundary-related properties of face-centered cubic (FCC) metals. During the twinning-related GBE, the microstructures are characterized as abundant special twin boundaries that sufficiently disrupt the connectivity of the random boundary network. However, controlling the grain boundary character distribution (GBCD) is an extremely difficult issue, as it strongly depends on diverse processing parameters. This article provides a comprehensive review of controlling GBCD during the twinning-related GBE of FCC materials. To commence, this review elaborates on the theory of twinning-related GBE, the microscopic mechanisms used in the optimization of GBCD, and the optimization objectives of GBCD. Aiming to achieve control over the GBCD, the influence of the initial microstructure, thermo-mechanical processing (TMP) routes, and thermal deformation parameters on the twinning-related microstructures and associated evolution mechanisms are discussed thoroughly. Especially, the development of twinning-related kinetics models for predicting the evolution of twin density is highlighted. Furthermore, this review addresses the applications of twinning-related GBE in enhancing the mechanical properties and corrosion resistance of FCC materials. Finally, future prospects in terms of controlling the GBCD during twinning-related GBE are proposed. This study will contribute to optimizing the GBCD and designing GBE routes for better grain-boundary-related properties in terms of FCC materials.

show abstract

A novel surface grain boundary engineering approach to improving corrosion resistance of a high-N and Ni-free austenitic stainless steel

Jia,

Guan,

Wang

et al. 2024

Corrosion Science

View full text Add to dashboard Cite

Effect of Grain Boundary Engineering on the Work Hardening Behavior of AL6XN Super-Austenitic Stainless Steel

Cited by 4 publications

References 48 publications

Study on the High Temperature Tensile Properties and Strengthening Mechanism of Nitrogen Containing Nickel‐Based Deposited Metals

Study on the High Temperature Tensile Properties and Strengthening Mechanism of Nitrogen Containing Nickel‐Based Deposited Metals

A Review on Controlling Grain Boundary Character Distribution during Twinning-Related Grain Boundary Engineering of Face-Centered Cubic Materials

A novel surface grain boundary engineering approach to improving corrosion resistance of a high-N and Ni-free austenitic stainless steel

Contact Info

Product

Resources

About