Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
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#1Dongming Li (Dalian Jiaotong University)
#2Ruixian Qin (Dalian Jiaotong University)H-Index: 2
Last. Junxian Zhou (Dalian Jiaotong University)H-Index: 2
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Abstract null null The lattice structure manufactured by additive manufacturing has geometric defects, which makes geometric shapes different from initial design. This research aims to incorporate stochastic geometric defects into the strut elements of a lattice structure to enhance predictive capabilities of simulation and analyze the influence of difference defects on mechanical properties. Here, X-ray computed tomography (CT) was used to extract the shape and distribution of process-induced d...
#1Shiyuan Zhou (Chongqing University)
#2Chao Deng (Chongqing University)H-Index: 9
Last. Xiaoli Yuan (Chongqing University of Science and Technology)H-Index: 3
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Abstract null null In the paper, the microstructure and texture of adiabatic shear band (ASB) in hat-shaped pure magnesium specimens under dynamic shear loading were investigated, and the formation and fracture mechanism of ASB were discussed as well. Results showed that, the straight ASB, with a width about 90 μm was formed upon shear loading, being consisted of the transition and ASB central regions. Equiaxed grains with large angle grain boundaries (LAGBs) were deposited in the ASB central re...
#1Yu Wan (China University of Petroleum)H-Index: 5
#2Wenchun Jiang (China University of Petroleum)H-Index: 22
Last. Xiangnan ZhaiH-Index: 2
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Abstract null null Ultra-thick duplex stainless steel welding plates are widely used in various industries. However, one of the significant concerns is the inhomogeneous microstructure and mechanical properties along the thickness, which reduces welding efficiency and degrade service performance. In this study, a 55 mm thick duplex stainless steel welding joint with an X-type weld groove was prepared to study the variation of microstructure and mechanical properties along the through-thickness d...
#1Yanan Hu (Southwest Jiaotong University)H-Index: 8
#2Shengchuan Wu (Southwest Jiaotong University)H-Index: 22
Last. Philip J. Withers (University of Manchester)H-Index: 88
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Abstract null null A fine (~3–10 μm) equiaxed zone (FQZ) between the heat affected zone and the weld metal is a unique microstructural feature associated with fusion welded Zr-containing aluminum alloys, posing a significant threat to the structural integrity of welded components. This work examines the softening and failure behavior of a 7050-T7451 hybrid laser welded joint. Nanoindentation test results show the FQZ to have the lowest hardness across the welded joint, which is attributed primar...
#1Ussadawut Patakham (Thailand National Science and Technology Development Agency)H-Index: 7
#2A. Palasay (Thailand National Science and Technology Development Agency)
Last. Ruangdaj Tongsri (Thailand National Science and Technology Development Agency)H-Index: 7
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Abstract null null In general, melt pool boundary (MPB) characteristics and Si morphologies have strong influences on micro-macroscopic plastic behavior and fracture mode. They are the main reasons for the selective laser melting (SLM) AlSi10Mg parts to exhibit anisotropic properties and low ductility. Building strategy is the important step for SLM part design and manufacturing. It can help reducing anisotropic properties of SLM AlSi10Mg parts by distributing MPBs on the load bearing face. In t...
#1Xuecheng Cai (Yanshan University)H-Index: 4
#2J.J. Liang (Yanshan University)
Last. Tongde Shen (Yanshan University)H-Index: 32
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Abstract null null As structural materials candidates of advanced fission and future fusion reactors, oxide-dispersion-strengthened (ODS) alloys, which are often ultrafine-grained (with a grain size between 100 and 1000 nm), have attracted widespread interest in past decades. However, fabrication of fully dense bulk nanocrystalline ODS alloys has rarely been reported. In this work, a novel Zr-doped nanocrystalline 14YWTZ ferritic ODS alloy (Fe–14Cr–3W-0.4Ti-0.8Zr-0.3Y2O3) was prepared by mechani...
#1Qibing Liu (SJTU: Shanghai Jiao Tong University)H-Index: 1
#2Genlian Fan (SJTU: Shanghai Jiao Tong University)H-Index: 39
Last. Hao Zhang (SJTU: Shanghai Jiao Tong University)H-Index: 2
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Abstract null null To improve the recrystallization resistance of 2195 Al–Cu–Li alloys, we proposed a two-step homogenization (TS) to facilitate the homogeneous nucleation of Al3Zr, and the effect of Al3Zr precipitate on the recrystallization behavior and on the strength and ductility of 2195 alloys were investigated. It is shown that the first low-temperature homogenization in TS promotes the nucleation of Al3Zr due to large driving force, and second high-temperature homogenization helps to acc...
#1Jianfeng Zhao (Southwest Jiaotong University)H-Index: 5
#2Z.L. Xie (Southwest Jiaotong University)
Last. Sheng-Nian Luo (Southwest Jiaotong University)H-Index: 32
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Abstract null null High strain-rate (up to 6600 s−1) and quasi-static compression tests are conducted on a powder-sintered porous titanium with different pore sizes (mean: null null null null 30 null null null μ null m null null null null and null null null null 120 null null null μ null m null null null ). In situ X-ray imaging is implemented to characterize the pores-scale deformation dynamics. The yield strength as a function of strain rate exhibits two stages of rate sensitivity, and the tra...
#1Y.W. Luo (MOE: Chinese Ministry of Education)H-Index: 1
#2T. Ma (MOE: Chinese Ministry of Education)
Last. B. Zhang (MOE: Chinese Ministry of Education)H-Index: 4
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Abstract null null Blade-Integrated Disk is a perspective one-piece design strategy of turbine engine components with high efficiency of air compression. In this work, a functionally graded material composed of GH4169 and K418 is processed by laser melting deposition technique, followed by suitable heat treatment to optimize the microstructures and mechanical properties. Microstructure characterization, tensile and small punch creep tests of the functionally graded GH4169/K418 specimens were con...
#1M.R. Kamali (YU: Yazd University)H-Index: 1
#2A.R. Mashreghi (YU: Yazd University)H-Index: 7
Last. Jukka Kömi (University of Oulu)H-Index: 5
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Abstract null null Various contributors have been suggested so far to explain the variation of mechanical properties of Fe–Co–V magnetic alloys, but a comprehensive understanding is still lacking. In the present study, the variation of hardness, tensile yield strength (YS), and elongation at room temperature were determined for an 86% cold-rolled Fe–50Co–10V (wt.%) alloy after annealing at the temperature range of 300–1050 °C for holding times from 10 to 240 min. The potential contributing facto...
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