Effect of microstructure and crystallographic texture on the Charpy impact test for maraging 300 steel

Masoumi, Mohammad; Barros, Isabel Ferreira de; Herculano, Luis Flavio Gaspar; Coelho, Hana Livia Frota; Abreu, Hamilton Ferreira Gomes de

doi:10.1016/j.matchar.2016.09.003

Cited by 23 publications

(9 citation statements)

References 30 publications

(30 reference statements)

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“…The impact property is also affected by the process of cold flow forming which results in the change of microstructure and crystallographic textures [16,25]. However, the gas cylinder after cold flow forming was heat treated.…”

Section: Discussionmentioning

confidence: 99%

Microstructure and Mechanical Properties of 34CrMo4 Steel for Gas Cylinders Formed by Hot Drawing and Flow Forming

Fang

et al. 2019

Materials

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An integral manufacturing process with hot drawing and cold flow forming was proposed for large-diameter seamless steel gas cylinders. The main purpose of this study was to find out the effects of the manufacturing process on the microstructure and mechanical properties of gas cylinders made of 34CrMo4 steel. Two preformed cylinders were produced by hot drawing. One cylinder was then further manufactured by cold flow forming. The experiments were carried out using three types of material sample, namely, base material (BM), hot drawing cylinder (HD), and cold flow-formed cylinder (CF). Tensile and impact tests were performed to examine the mechanical properties of the cylinders in longitudinal and transverse directions. Microstructure evolution was analyzed by scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD) to reveal the relation between the mechanical properties and the microstructure of the material. It is found that the mechanical properties of the 34CrMo4 steel gas cylinders were significantly improved after hot drawing and flow forming plus a designed heat treatment, compared with the base material. The observations of microstructure features such as grain size, subgrain boundaries, and residual strain support the increase in mechanical properties due to the proposed manufacturing process.

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Section: Discussionmentioning

confidence: 99%

Microstructure and Mechanical Properties of 34CrMo4 Steel for Gas Cylinders Formed by Hot Drawing and Flow Forming

Fang

et al. 2019

Materials

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“…However, although there is a lot of work in the literature about maraging steels, there are also several differences in them. One example is the crystalline structure of the martensitic matrix, which is historically cited as body-centered cubic (BCC) [2,12,[26][27][28][29], but recent articles show that strong saturation of substitutional elements causes tetragonal distortion in this matrix [5,6,15,30]. Another difficulty found in the literature is the quantification of precipitates.…”

Section: Introductionmentioning

confidence: 99%

Structural Study of Undeformed and Deformed Maraging C300 Steels Using X-ray Diffraction Measurements

Melo

Oliveira

Poffo

et al. 2020

Metallogr. Microstruct. Anal.

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A high Ti content maraging C300 steel was analyzed by X-ray diffraction measurements to study the effect of aging at 773 K for different treatment times by monitoring lattice parameter, microstrain, crystallite size and formation/dissolution of intermetallic Ni 3 (Ti, Mo). The results showed a strong influence of cold and hot deformation over precipitation of the coherent metastable orthorhombic phase Ni 3 (Ti, Mo). The volumetric fraction of this precipitation can go up to 14 and 19% in non-deformed and deformed samples, respectively. At longer aging time, this precipitate starts to dissolve to form a more stable μ phase and reverse austenite. Also, the results showed a strong influence of deformation and precipitation on crystallite size and microstrain.

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“…Although toughness may be affected by many factors, like microstructure, inclusions, processes, and even exposure to radiation, there has been growing interest in the effects of corrosion and how to avoid them. Recent studies have looked at for example, untreated SAE 1020 steel, its atmospheric corrosion resistance, and corrosion effects on its mechanical properties in different environments located in Chile.…”

Section: Introductionmentioning

confidence: 99%

Study on the effect of atmospheric corrosion on mechanical properties with impact test: Carbon steel and Galvanized steel

Vera

Araya

Garín

et al. 2019

Materials & Corrosion

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The present work presents the behavior of carbon steel and galvanized steel against atmospheric corrosion after 3 years of exposure at seven locations around the region of Valparaiso, Chile. Results show a relation between corrosion rates and environmental and meteorological conditions, categorized as CX for the Quintero zone, and C3 and C2 in the remaining six zones. Corrosion rate behaviors and material toughness losses were modeled using power functions and neural networks, found to be a function of environmental exposure time. Losses were greater for carbon steel in coastal and industrial environments, reaching 70 to 80%. This effect was reduced in galvanized steel, not exceeding 15% over the same period of exposure. The relationship between corrosion rate and loss of toughness of both materials was modeled using neural networks. K E Y W O R D S atmospheric corrosion, carbon steel, galvanized steel, industrial environments, marine environments, SEM, toughness, weight loss, XRD

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Effect of microstructure and crystallographic texture on the Charpy impact test for maraging 300 steel

Cited by 23 publications

References 30 publications

Microstructure and Mechanical Properties of 34CrMo4 Steel for Gas Cylinders Formed by Hot Drawing and Flow Forming

Microstructure and Mechanical Properties of 34CrMo4 Steel for Gas Cylinders Formed by Hot Drawing and Flow Forming

Structural Study of Undeformed and Deformed Maraging C300 Steels Using X-ray Diffraction Measurements

Study on the effect of atmospheric corrosion on mechanical properties with impact test: Carbon steel and Galvanized steel

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