Last. Kejia Zhuang(WUT: Wuhan University of Technology)H-Index: 12
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Abstract null null Sintered carbide tools with their edge chamfered have superior resistance against brittle fracture of the main edge. Such advantage is mainly attributed to the formed built-up edge (BUE) anterior to the chamfer face. However, as the cutting process, certain materials including cracked BUE in that vicinity will inevitably flow aside along the chamfer face, which eventually causes severe notch wear and lateral burr formation. Given this deficiency, both theoretical and experimen...
Last. Ming Chen(SJTU: Shanghai Jiao Tong University)H-Index: 23
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Abstract null null Ti6Al4V manufactured by direct metal laser sintering (DMLS) is a difficult-to-cut material and has a different microstructure to conventional Ti6Al4V. Therefore, this work aims to investigate the influence of microstructure characteristic and sustainable cooling/lubrication method on machining responses of Ti6Al4V. Side milling tests were performed under dry and supercritical CO2-based minimum quantity lubrication (scCO2-MQL) conditions. Experimental materials were DMLS-produc...
Abstract null null In this study, wear and corrosion behavior of a novel borided high manganese steel (HMS) produced by the researchers was investigated. After the sheets were cold-rolled, they were annealed. HMS was borided at 850, 900, and 950 °C for 2, 4, and 6 h through the pack-boriding process. Borided HMS uncommonly exhibited a saw-tooth morphology like low alloy steels due to similar crystal structures of MnB and FeB. XRD analysis showed the existence of SiC, FeB, MnB and Fe2B phases. Th...
#1Cui Zhipeng(CAEP: China Academy of Engineering Physics)H-Index: 1
#2Chunyu Zhang(CAEP: China Academy of Engineering Physics)
Last. Kai Du(CAEP: China Academy of Engineering Physics)H-Index: 1
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Abstract null null Pointed diamond tool has been widely used in ultraprecision manufacturing of V-grooves. This article provides a wear law and wear characteristics of pointed diamond tool during V-grooves machining with the consideration of the cutting stress and the strength of diamond, which could be used to estimate the tool wear state and control the V-grooves machining quality. In this research, the model of cutting stress distribution and cutting force in V-grooves machining are establish...
Abstract null null A precise control of the Mg content in Al–Mg alloys is essential to obtain predictable mechanical properties but the processing of Al–Mg alloys often suffers Mg losses due to Mg evaporation and oxidation. A new high strength Al–Mg–Sc alloy designed for LPBF (laser powder bed fusion) processing has been developed here, where Mg losses are effectively prevented by the addition of a low amount of calcium. A LPBF processing window which results in built parts with a 99.7% relative...
Last. Jun Yanagimoto(UT: University of Tokyo)H-Index: 23
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Abstract null null For the purpose of obtaining a niobium-microalloyed steel with a preferable ultrafine-grained ferrite microstructure, a thermomechanical controlled processing (TMCP) strategy that included a hot shear deformation conducted near the local phase transformation temperature and a subsequent cooling process is proposed. As a large plastic strain was enforced by the simple hot shear deformation, severe plastic deformation (SPD) of the niobium-microalloyed steel was realized. The pro...
Last. Linjie Zhang(XJTU: Xi'an Jiaotong University)H-Index: 39
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Abstract null null This investigation focuses on obtaining martensite stainless steel part with uniform mechanical properties along the building direction (BD) by plasma arc direct energy deposition (DED). A tailored 1Cr17Ni2B alloy powder and layer minimum temperature control process were employed. The results revealed that the tensile strengths along BD exhibited a good uniformity with a relative difference less than 1.4 % and the average ultimate tensile strength was 1382 MPa. The high microh...
Abstract null null Blank wrinkling is the most frequently encountered material processing failure in spinning. Design of toolpath profiles and selection of process parameters are important in preventing wrinkling. Existing studies employ simplified toolpath profiles and rely on the calculation of maximum and critical stresses of the blank to determine the onset of wrinkling, often requiring time-consuming Finite Element simulations. To overcome these limitations, this paper develops an analytica...
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