Effect of sintering temperature on microstructure and properties of MIM420 stainless steel

Huang, Zheng; Jiang, Xingquan; Li, Duxin; Yang, Zhongchen; Lu, Renwei

doi:10.1080/00325899.2021.2006932

Cited by 3 publications

(1 citation statement)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The carbon content in it exceeds 95%, which is a microcrystalline graphite material obtained by carbonization and graphitization of organic fibers. Carbon fiber has many excellent properties, its specific gravity is less than 1/4 of that of steel, but its strength is higher than that of steel, and it has the characteristics of corrosion resistance and high modularity, it has good properties of not easy to creep, high temperature and fatigue resistance in the nonoxidizing environment [ 10 , 11 ]. A composite material is a material with two or more different properties, including a material with new properties composed of physical or chemical methods, such as a material composed of reinforcing material and polymer matrix, cement-based carbon fiber material, in recent years, it has developed rapidly and is widely used in aerospace, machinery, electronics, chemical industry, and other fields.…”

Section: Literature Reviewmentioning

confidence: 99%

Application of Cement-Based Carbon Fiber Material in Construction of Building Durability

Li¹,

Li²,

Zhang³

et al. 2022

International Journal of Analytical Chemistry

View full text Add to dashboard Cite

In order to solve the problem of drying shrinkage of cement-based carbon fiber materials in the early stage of hardening, the author proposes the application of cement-based carbon fiber materials in the construction of building durability. The author uses a self-designed fast ring test method to test and study the drying shrinkage performance of cement-based carbon fiber materials in the early stage of hardening. The results showed that the addition of MP-I and MP-II fibers, which can significantly reduce shrinkage cracking in plastic concrete, has little effect on preventing the shrinkage and cracking of concrete in the early stage of hardening. Mixed with a certain amount of steel fiber, carbon fiber, MH-I, and MPH-I hardened anticrack fiber, all have a better effect on preventing early water loss and drying shrinkage of hardening. The MH-I and MPH-I hardening anticracking fibers have an economical and feasible dosage, and the early water loss shrinkage and crack reduction rates of concrete hardening are 71.2% and 79.0%, respectively. MH-I fibers have no anticracking effect in the plastic stage and are only suitable for shrinkage and crack prevention of concrete in the early stage of hardening, while MPH-I hardened anticrack fibers have a 100% crack-reducing effect in the plastic stage, it is an engineering fiber material that can simultaneously prevent the plasticity and early hardening of concrete from shrinkage and cracking. The application of MPH-I hardened anticrack fiber is of great significance to improve the quality of structural engineering.

show abstract

Section: Literature Reviewmentioning

confidence: 99%

Application of Cement-Based Carbon Fiber Material in Construction of Building Durability

Li¹,

Li²,

Zhang³

et al. 2022

International Journal of Analytical Chemistry

View full text Add to dashboard Cite

show abstract

Influence of Laser Parameters on the Texturing of 420 Stainless Steel

et al. 2022

View full text Add to dashboard Cite

AISI 420 martensitic stainless steel is widely used in the mould industry due to its high tensile strength, hardness, and corrosion properties. Another requirement concerning any material used for this type of application is high thermal conductivity to minimise the time between consecutive injection cycles. The surfaces of some parts of the mould may be textured and reinforced with a material with higher thermal conductivity to achieve this aim. The results of a detailed study on the texturing of annealed 420 stainless steel using a Nd:YVO4 fibre laser are presented in this work. The influence of the laser’s processing parameters (laser power, scanning speed, number of passes, and line spacing) on the dimensions of the track, microstructure, and hardness of the modified surfaces was studied. Based on the continuity and dimensions of the machined grooves, several promising textures could be produced with laser power values from 5 to 30 W, scanning speeds of 500 to 2000 mm/s, 8 passes or more, and line spacings of 40 and 50 µm. High laser powers were responsible for the dissolution of chromium carbides in the laser tracks, the incorporation of chromium in austenite, and the consequent hardening of the microstructure.

show abstract

Achieving Homogeneous Microstructure and Superior Properties in High-N Austenitic Stainless Steel via a Novel Atmosphere-Switching Method

Zhang,

Li,

Huang

et al. 2024

Metals

View full text Add to dashboard Cite

Powder metallurgy is widely used to fabricate high-nitrogen, nickel-free austenitic stainless steel. However, after sintering and nitriding, additional solution treatment is typically required to achieve uniform nitrogen distribution and a homogeneous austenite phase. This work proposes a novel method to eliminate the need for lengthy and high-temperature solution treatment by switching the nitrogen atmosphere to argon during the cooling process. The effects of different N2-Ar atmosphere-switching temperatures (750–1320 °C) on the phase composition, element distribution, microstructure, mechanical properties, and corrosion resistance of the studied steels were systematically investigated. Results show that cooling in the N2 atmosphere initially transforms the matrix to a fully austenitic structure enriched with nitrogen. Excessive nitrogen infiltration leads to Cr2N precipitation, inducing partial austenite decomposition and forming a multiphase structure comprising austenite, α-Fe, and Cr2N. Strategic switching from N2 to Ar reverses this reaction, yielding a high-nitrogen, chemically uniform austenitic structure. Specifically, switching at 1150 °C, the steel exhibits excellent mechanical properties and corrosion resistance, with a yield strength of 749 MPa, an ultimate tensile strength of 1030 MPa, an elongation of 38.7%, and a corrosion current of 0.06 mA/cm2, outperforming the steels cooled solely in N2 and subsequently solution-treated. This novel method offers advantages in cost reduction, energy saving, and operational effectiveness, highlighting its potential for broad industrial application.

show abstract

Effect of sintering temperature on microstructure and properties of MIM420 stainless steel

Cited by 3 publications

References 19 publications

Application of Cement-Based Carbon Fiber Material in Construction of Building Durability

Application of Cement-Based Carbon Fiber Material in Construction of Building Durability

Influence of Laser Parameters on the Texturing of 420 Stainless Steel

Achieving Homogeneous Microstructure and Superior Properties in High-N Austenitic Stainless Steel via a Novel Atmosphere-Switching Method

Contact Info

Product

Resources

About