Keywords: Cementite, Pearlite, Deformation, Dissolution, Mechanical Properties, Characterization Abstract. The deformation behavior of cementite was studied using eutectoid steels with pearlitic and spheroidite structures and fine grained bulk cementite prepared by sintering the mechanically alloyed powders.
Effect of pearlitic and bainitic initial microstructure on cementite ...
2023年3月1日 · Two starting microstructures (pearlite and lower bainite) were compared in their spheroidization tendency by divorced eutectoid transformation (DET) during a simulated HAZ thermal cycle. The phase transformation kinetics through the heat treatments was also analyzed using high-resolution dilatometry tests.
Designing spherical cementite in bainitic matrix (SCBM) microstructures ...
2019年8月15日 · Spherical cementite particles in the bainitic matrix in high carbon steel processed by powder metallurgy (PM) method were produced and compared with separately sintered, fully bainitic and spherical cementite in the ferritic matrix microstructures for their microstructure-hardness-dry sliding wear properties.
Microstructure engineering for superior wear and impact …
2022年4月1日 · Spherical cementites in the bainitic matrix (SCBM) microstructures were achieved by heat treatment cycles in high carbon powder metallurgy steels. The wear and impact toughness properties of SCBM microstructures compared with fully bainitic, tempered martensitic and spherical cementite in the ferritic matrix microstructures.
Microstructures of sintered iron with 0.5% carbon
Sinter bonding of the powder particles and two phases, pearlite and ferrite, are visible. Advances in the understanding of the sintering of powder premixes have contributed significantly to...
Improvement of Mechanical Properties of 20CrMnTi Steel through ...
2022年5月12日 · In the present study, expanded graphite (EG) was added in a 20CrMnTi matrix to form pearlite microstructure and proeutectoid cementite after sintering. Mechanical alloying was used to obtain a fine milled mixture with a ball/powder weight ratio of 20:1.
Effect of Carbon Concentration in Austenite on Cementite …
Pearlite (P) is a fine lamellar structure formed through the eutectoid reaction from austenite (γ) to ferrite (α) and cementite (θ) in Fe–C alloys. It is a major microstructure in carbon steels, and thus there have been many studies on the microstructure and mechanical properties of pearlite.
Multiscale Microstructure Evolution and Subgrain Strengthening …
2023年9月11日 · To optimize the synergy between the strength and ductility of ordinary medium-carbon steel, a pseudo-eutectic structure with ultrafine pearlite and pre-eutectic ferrite was formed by pretreatment and a multiscale lamellar structure was obtained by subsequent warm rolling.
Comparative Corrosion Behavior of Five Microstructures (Pearlite ...
2019年1月10日 · The present work discusses the comparative corrosion behavior of five microstructures of steels, namely, pearlite, bainite, spheroidized, martensite, and tempered martensite, which have been processed, respectively, by air cooling, isothermal transformation, spheroidizing, quenching, and tempering of a steel with composition 0.70C, 0.24Si, 1 ...
Effect of Prior Microstructures on Cementite Dissolution …
2021年6月23日 · For the initial microstructure of coarse pearlite (C-P), the mean diameter of cementite decreased with the increase of austenitizing temperature, while the mean diameter of cementite showed the opposite trend for fine pearlite (F-P) and degenerated pearlite (D-P).
- 某些结果已被删除