Multi-scale investigation of the mechanical properties of Loblolly pine wood at elevated temperature

Wang, Xinzhou; Huang, Yaqian; Lv, Chao; Wang, Junfeng; Wang, Siqun; Yao, Yan

doi:10.1080/17480272.2022.2053203

Cited by 7 publications

(3 citation statements)

References 42 publications

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“…2b. This is related to the increase of plastic deformation, dislocation density and lattice distortion of mixed metal powder during ball milling 33 . After 50 hours of ball milling, the XRD of mixed metal powder is basically unchanged, and its size is small, which is more conducive to sintering.…”

Section: Microstructurementioning

confidence: 99%

Effect of Nb Content on Microstructure and Properties of Fe–20Mn Alloy Prepared by Ball Milling and Spark Plasma Sintering

Huang

Xiong

et al. 2023

Mater. Trans.

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：In this paper, Fe-20Mn-xNb alloys ware prepared by ball milling and spark plasma sintering techniques. Phase constituents were characterized by X-ray diffractometer and Microstructure were characterized by scanning electron microscopy, and the tensile properties, hardness, compactness and damping properties were tested as well. The results show that after ball milling, the metal powders of Fe-20Mn-3Nb first exhibited an irregular plate-like or flake-like morphology, then large irregular particles were broken into fine particles. The addition of Nb element significantly increases the content of γ and ε phase, promoting the formation of γ and ε, and Fe2(Nb, Mn) phase precipitates in Fe-20Mn-3Nb alloy. And Mechanical properties of the alloy are significantly improved by adding Nb element. The UTS and YS of Fe-20Mn-3Nb alloy are the highest, which are 818MPa and 628.7Mpa respectively, while the elongation of Fe-20Mn-0.5Nb alloy is the highest, which is 31.7% (20.2% higher than that of 0Nb alloy). The hardness and density of the alloy A d v a n c e V i e w can be increased by adding Nb. The fracture mechanism of Fe-20Mn-xNb(x=0.5、 1.5、3) alloys is typical ductile fracture, while the fracture mechanism of Fe-20Mn alloy is quasi-xcleavage fracture. The damping property of Fe-20Mn alloys increases with increasing strain. The addition of Nb can significantly improve the damping properties of Fe-Mn alloys.

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Section: Microstructurementioning

confidence: 99%

Effect of Nb Content on Microstructure and Properties of Fe–20Mn Alloy Prepared by Ball Milling and Spark Plasma Sintering

Huang

Xiong

et al. 2023

Mater. Trans.

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“…The variations of structure and chemical characteristics behave as different physiomechanical properties of wood. Among the numerous properties, density determines the physiomechanical properties of wood to a large extent, which is reflected in the availability of a wide range of wood materials properties [15][16][17][18]. It is reasonable to classify wood species based on density and a series of physiomechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Classification of Principal Wood Species in China Based on the Physiomechanical Properties

Zhu¹,

Peng²,

Lu³

et al. 2023

Journal of Renewable Materials

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Many tree species are planted in China with variable properties and usage. Toward exploring the structure-properties relationships of wood and classifying the species more reasonably, the physiomechanical properties of the domestic wood species in China were analyzed statistically. According to the correlation analysis, the mechanical properties were closely related to the wood density. Except impact toughness and cleavage strength, the correlation coefficients between mechanical properties and densities were more than 0.8. However, shrinkage properties showed fewer correlations with densities, and the coefficient was no more than 0.7. Primary component analysis was proved to be feasible to explore the information of the physiomechanical properties. Two principal components (PC1 and PC2) could account for most of the information. PC1 and PC2 were designated as density-dominated and shrinkage-associated factors, respectively. The domestic wood species in China could be classified into 4 clusters based on their physiomechanical properties. According to the cluster results, reasonable grading was proposed for air-dried density, volume shrinkage, modulus of rupture, compression strength parallel to grain and hardness in cross section. The statistical results brought insights into analyzing the physiomechanical properties of domestic Chinese wood species, which was helpful for developing strategies of tree breeding and technologies of wood processing.

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“…Thermal treatment leads to the degradation or reorganization of wood chemical compositions, which improves the decay resistance and dimensional stability of wood. (Schwarze et al 2005;Srinivas et al 2012;Li et al 2021; Wang et al 2022). In addition, the thermal treatment deepens the surface color of the wood, endowing the wood with a uniform and digni ed color; thus, the ordinary wood can imitate precious wood after heat treatment and has the potential to replace precious wood (Gunduz et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Response relationship between color and chemical composition and microstructure of heat- treated wood

Liu¹,

Zhang²,

Jiang³

et al. 2023

Preprint

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The magnitude of the color change of heat-treated wood is closely related to the chemical composition of the wood, and the change in chemical composition is the essential reason for changes in the mechanical properties of heat-treated wood. Exploring the influence and linear correlation of the magnitude of the lightness indicator (L*) of poplar (Populus tomentosa Carr.) and spruce (Picea asperata Mast.) in heat treatment on the chemical composition and cell wall structure of heat-treated wood, and constructing a response relationship between L* values and them. The relative content of cellulose in heat-treated poplar increased gradually and was significantly negatively correlated with the L* value, however, the heat-treated spruce first increased and then decreased, and the correlation with the L* value was insignificant. The L* value of the heat-treated wood was significant positively correlated with the content of hemicellulose and lignin. The CrI and crystalline size of poplar and spruce after thermal modification first increased and then decreased with the decrease of L* value, and the L* values had a superior response relationship with their crystallite size. The shrinkage deformation and radial cracking of the cells of poplar and spruce after thermal modification became increasingly obvious as the L* value gradually decreased, the L* values had an extremely significant positive correlation with their radial thickness of the cell wall. Therefore, the constructed response relationship provides a theoretical basis for accurate and nondestructive testing of the mechanical properties of heat-treated wood using color parameters as a rapid detection indicator.

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Multi-scale investigation of the mechanical properties of Loblolly pine wood at elevated temperature

Cited by 7 publications

References 42 publications

Effect of Nb Content on Microstructure and Properties of Fe–20Mn Alloy Prepared by Ball Milling and Spark Plasma Sintering

Effect of Nb Content on Microstructure and Properties of Fe–20Mn Alloy Prepared by Ball Milling and Spark Plasma Sintering

Classification of Principal Wood Species in China Based on the Physiomechanical Properties

Response relationship between color and chemical composition and microstructure of heat- treated wood

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