Apr 28, 2020 · The effect of tempering (673 K for 30 min) on the microstructure and tensile properties of laser melt-deposited (LMD) 12CrNi2 low-alloy steel is studied. The results show that LMD 12CrNi2 mainly consists of the ferrite and some Cr23C6 carbides. Characterization of the Schmid factor near the fracture surface shows that after tempering, the slip system with the largest Schmid factor is still Effects of copper addition on microstructure and strength Aug 26, 2009 · Lap joint of magnesium alloy AZ31B to mild steel Q235 with the addition of copper interlayer by hybrid laser-TIG welding technique was investigated. The microstructure, element distribution at interfaces, and intermediate phases of joints were examined by scanning electron microscopy (SEM), electron probe micro-analyzer (EPMA), and X-ray diffraction (XRD), respectively.
- IntroductionMaterials and MethodsResultsSummaryData Availability StatementAuthor ContributionsConflict of InterestFundingFootnotesChunze Yan - Google ScholarEffect of laser energy density on the evolution of Ni4Ti3 precipitate and property of NiTi shape memory alloys prepared by selective laser melting J Gan, L Duan, F Li, Y Che, Y Zhou, S Wen, C Yan Journal of Alloys and Compounds 869, 159338 , 2021
Investigation on basic friction and wear mechanisms within Abstract Hot stamping is a well-established technology for producing safety relevant car components. The use of hot stamped components in modern car bodies offers the possibility of improving crash performance due to their high strength while simultaneously decreasing the fuel consumption by reducing sheet thicknesses and thus weight. Hot stamped components are mainly produced using the boron
Material-structure-performance integrated laser-metal May 27, 2021 · Laser-based additive manufacturing has the potential to revolutionize how components are designed. Gu et al. suggest moving away from a strategy that designs and builds components in a serial manner for a more wholistic method of optimization for metal parts. The authors summarize several key developments in laser powder bed fusion and directed energy deposition and outline a number of
To meet the requirements for directed laser deposition (DLD) key metal wear parts with hardness gradient from 300 to 900 HV, a novel 50Cr6Ni2Y alloy steel was designed as the sub-surface working Microstructure evolution and properties of direct laser Apr 15, 2021 · To solve the problems of high porosity and uneven microstructure of high-performance alloy steel parts, 24CrNiMoY samples were prepared by non-contact ultrasonic cavitation-assisted (UC-A) direct laser deposited (DLD) process. The samples in the UC-A DLD process were treated with ultrasonic application at three angles of 30°, 45°, and 60° to the horizontal plane and without Quality Management of Metal Products Prepared by High In this article the technology high-speed direct laser deposition is performed. Influence of process parameters on product properties and material structure was defined for Ni-based alloy Inconel 625. Developed technology provided the mechanic properties of products on the bottom level of rolled metal and allows avoid heat treatment and HIP in production process.
Abstract Powder deposition is a critical element for coating and additive processes such as laser direct metal deposition. The flow rate and distribution of the powder affect the size of the deposited tracks and the total efficiency of the process. Therefore, knowledge of the three-dimensional shape of the powder flow and its relative position to the melt pool is crucial for any process Tong CUI Shenyang CityLiaoning ProvinceChina. PhD To meet the requirements for directed laser deposition (DLD) key metal wear parts with hardness gradient from 300 to 900 HV, a novel 50Cr6Ni2Y alloy steel was designed as the sub-surface workingEvolution mechanism and precipitation kinetics of carbides Carbides as main reinforcing phase play a significant role in direct laser deposition (DLD) 50Cr6Ni2Y alloy steel with high hardness and wear-resistant. The 50Cr6Ni2Y alloy steel samples were prepared with different laser energy average densities (EAD) from 90 J/mm 2 to 110 J/mm 2. Subsequently, the precipitation and evolution mechanism of