Effect of Boron Addition on the Precipitation Behavior of S31254

Bai, Jingang; Cui, Yan; Wang, Jian; Dong, Nan; Qurashi, Muhammad Saqlain; Wei, Hairui; Yang, Yongchao; Han, Peide

doi:10.3390/met8070497

Cited by 25 publications

(7 citation statements)

References 27 publications

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“…This improves the formability of steel . Minor amounts of boron (0.004 wt%) in the stainless steel S31254 prevented the formation of sigma phase, thereby, enhancing its hot workability …”

Section: Manufacturing Of Boron‐alloyed Steelsmentioning

confidence: 99%

Boron in Heat‐Treatable Steels: A Review

Sharma

Ortlepp

Bleck

2019

steel research int.

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The science and technology of boron addition to heat‐treatable steels are explained. The aim is to address the following: How to add boron to steel (i.e., the manufacturing aspects of boron addition to steel)? What precautions are necessary when alloying boron to steel, in terms of composition (mainly nitrogen, aluminum, and titanium contents), processing and heat treatment (i.e., material and process robustness and reproducibility for a consistent steel quality)? Where does boron go in steel (i.e., the state of boron, interstitial or substitutional solute, precipitate or a complex with other alloying elements; as well as the location of boron, i.e., dissolved as a solute in the grain or segregated at the grain boundary)? Which characterization methods are suitable for the detection of the very small amounts of boron (<30 wt ppm) in heat‐treatable steels? What does boron do in steel (i.e., its effect on hardenability and mechanical properties, specifically impact toughness)? How does it do and what it does (i.e., the physical mechanism by which it influences the properties)? How much boron is really required to achieve the desired properties in heat‐treatable steels (i.e., recommendations for the optimum boron content)?

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“…This improves the formability of steel . Minor amounts of boron (0.004 wt%) in the stainless steel S31254 prevented the formation of sigma phase, thereby, enhancing its hot workability …”

Section: Manufacturing Of Boron‐alloyed Steelsmentioning

confidence: 99%

Boron in Heat‐Treatable Steels: A Review

Sharma

Ortlepp

Bleck

2019

steel research int.

View full text Add to dashboard Cite

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“…Introducing boron has a positive effect on the properties and microstructure of cold-resistant austenitic steel with a small residual content of nitrogen being below 0.04% and boron being below 0.004%. This effect is related to the solubility of boron in γ-Fe and α-Fe, the reduction in harmful impurities of sulfur S and phosphorus P, and the formation of borides Me 2 B, Me 5 B 3 , Me 3 (C,B), Me 23 (C,B) 6 , FeMo 2 B 4 [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Electrochemical Composite Coatings with LaF3-LaB6 Particles in Nickel–Copper Matrix on the Metallurgical Processes in Arc Welding of Low Alloy Ferrite-Pearlite Steels

et al. 2021

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Development of welding consumables with fluorides and borides of rare earth metals is a promising area for improving the weldability of low alloy steels. As lanthanum fluoride and boride dissociate, lanthanum and boron dissolve in the weld pool and the welding arc plasma is saturated with fluorine. As a result of FeO, MnO, SiO2 deoxidation and FeS, MnS desulfurization, refractory lanthanum sulfides and oxides La2O3, La2S3 are formed in the weld pool, which can be the crystallization nuclei in the weld pool and the origin of acicular ferrite nucleation. The paper proposes a model of metallurgical processes in the arc and weld pool, as well as a model of electrochemical adsorption of Ni2+ cations in colloidal electrolytes during electrostatic deposition of nano-dispersed insoluble particles of LaF3 or LaB6 on the surface of wire. The paper discusses the constructional design of the welding wire and the technology for forming electrochemical composite coatings with copper and nickel matrix. The composite wires applied in the welding of low alloy steels make it possible to refine the microstructure, increase the tensile strength by 4% and the impact toughness of welds by 20%.

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“…Fortunately, B atoms are easier to segregate at grain boundaries, suppressing the precipitation of the second phases. Bai et al clarified the inhibition effect of B on the σ phase [7]. Besides, it has been demonstrated experimentally that B can elevate the content of Mo oxide in the passive film [8], which improves pitting corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Effects of B on the Segregation Behavior of Mo at the Fe–Cr(111)/Cr2O3(0001) Interface: A First-Principles Study

Zhang

et al. 2020

Metals

Self Cite

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The addition of B can inhibit the precipitation of σ phases at the grain boundary to improve the hot workability and corrosion resistance for super austenitic stainless steel with high Cr and Mo content. This study focused on the interaction between B and Mo at the Fe–Cr(111)/Cr2O3(0001) interface and its effect on interfacial adhesion by employing the first-principles method, especially the effect of B on the segregation behavior of Mo. The most stable O-terminated Fe/Cr2O3 interface was chosen as the basic configuration. The segregation energy and the work of separation were calculated for the metal/chromia interface with Fe–Cr as the substrate. It has been demonstrated that B can promote the diffusion of Mo atoms into the oxide layer to increase the content of Mo in the passive film. In addition, the interfacial adhesion is higher at the most segregated sites. However, it is more difficult for two or more Mo atoms than a single Mo atom to diffuse into the oxide part with the effect of B, indicating that B can only improve the Mo content of the passive film to a small extent. The electronic properties were also further discussed to analyze the interactions and the binding characters between doped atoms and their surrounding atoms and to explain the underlying reasons for the variation of interfacial adhesion.

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Effect of Boron Addition on the Precipitation Behavior of S31254

Cited by 25 publications

References 27 publications

Boron in Heat‐Treatable Steels: A Review

Boron in Heat‐Treatable Steels: A Review

The Effect of Electrochemical Composite Coatings with LaF3-LaB6 Particles in Nickel–Copper Matrix on the Metallurgical Processes in Arc Welding of Low Alloy Ferrite-Pearlite Steels

Effects of B on the Segregation Behavior of Mo at the Fe–Cr(111)/Cr2O3(0001) Interface: A First-Principles Study

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