A5059423669- Microstructure and Mechanical Properties of Steels
- Metal Alloys Wear and Properties
- Metallurgy and Material Forming
- Hydrogen embrittlement and corrosion behaviors in metals
- Magnetic Properties and Applications
- Microstructure and mechanical properties
- Welding Techniques and Residual Stresses
- High Entropy Alloys Studies
- Advanced Welding Techniques Analysis
- Metal and Thin Film Mechanics
- Additive Manufacturing Materials and Processes
- Magnetic properties of thin films
- Aluminum Alloys Composites Properties
- Magnetic Properties of Alloys
- High-Temperature Coating Behaviors
- High Temperature Alloys and Creep
- Structural Integrity and Reliability Analysis
- Advanced Thermodynamics and Statistical Mechanics
- High-Velocity Impact and Material Behavior
- Concrete Corrosion and Durability
- Advanced Thermodynamic Systems and Engines
- Advanced materials and composites
- Metallurgical Processes and Thermodynamics
- Aluminum Alloy Microstructure Properties
- Metal Forming Simulation Techniques
Institute of Solid State Physics
2006-2024
Chinese Academy of Sciences
2019-2024
Hefei Institutes of Physical Science
2019-2024
China Iron and Steel Research Institute Group
2023
Shougang Institute of Technology
2023
University of Science and Technology Beijing
2014-2021
Beijing Transportation Research Center
2019
The University of Adelaide
2018
Technical University of Košice
2018
University of Coimbra
2018
In this work, the Ni/Ti/Al/Cu composite was produced by accumulative roll bonding (ARB) technology at room temperature. The microstructure evolution and mechanical properties of in ARB process were investigated scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), transmission microscope (TEM), X-ray diffraction (XRD), micro-hardness tensile tests. results showed that a uniform could be an eight passes process, no intermetallics generated interfaces. As pass increased,...
Super austenitic stainless steel (SASS) was prepared by non-consumable vacuum arc melting for the first time. The effects of rare earth (RE) elements on its solidification microstructure and segregation behavior were investigated. σ phase is main precipitation in SASS. addition RE can refine dendrite spacing. reduced secondary spacing at top (S1) 5.22 μm. as Cr, Mn, Mo have positive segregation, Ni Fe negative segregation. has trend reducing element thereby inhibiting precipitation. And...
In the present study, laser welding of medium-thick TWIP steel plates was studied and microstructures mechanical properties welded joints obtained at varied speeds were characterized. It is shown that a full penetration achieved in joint, which exhibits keyhole-shaped configuration. The joint displays single austenitic phase typical solidification structure composed cellular, columnar dendrite grains. With increasing speed, grains both central fusion zone adjacent heat-affected refined....
In the present study, we design a novel hot stamping steel containing high amounts of C and Si micro-alloying element (i.e. Nb). The was subjected to quenching partitioning (Q&P) process. new Q&P treated exhibits significantly improved mechanical property in terms strength, ductility impact toughness compared with traditional 22MnB5 steel. influence time on microstructure properties investigated. retained austenite (RA) fraction carbon content RA increased higher times. With...
Tensile behavior and plastic deformation mechanisms of Fe-22.8Mn-8.48Al-0.86C low-density steel were studied in this thesis. After solution treatment 1100 °C for 1 h; the steels obtained an excellent combination mechanical properties; with tensile strength 757.4 MPa total elongation 68%; which attributed to existence annealing twins austenite. The present presented a multiple stage strain hardening was associated changes such dislocation substructures. With increase strain, gradual...
This study investigates the structure and corrosion behavior of Al0.8CrFeCoNiCu0.5 high-entropy alloy prepared using non-consumable vacuum arc melting. XRD analysis identified BCC1 BCC2 phases corresponding to (Fe-Cr) Al-Ni, respectively, while FCC phase aligned with Cu. SEM EBSD observations confirmed an equiaxed grain fishbone-like morphology at boundaries modulated structures within grains. The exhibited minimal residual stress strain. demonstrated a preferred orientation growth along...
In this paper, we investigate the effects of vanadium on strength and ductility medium-manganese steels by analyzing microstructural evolution strain hardening rates performing quantitative calculations. Two significantly different contents vanadium, 0.05 0.5 wt.%, were independently added to model steel (0.12C-10Mn) annealed at intercritical temperatures. The results show that higher addition increases yield but decreases ductility. maximum can increase from 849 MPa 1063 low calculations...
The microstructure and its effects on mechanical properties of medium manganese lightweight steel are investigated under both intercritical annealing (IA) a new type quenching partitioning processing, actualized by combining tempering (IQ‐T P ). result shows that the intercritically annealed at 800 °C exhibits superior tensile ductility, which is related to long‐term continued transformation‐induced plasticity (TRIP) effect austenite. Tempering has different steels quenched various...
In this work, accumulative pack-roll bonding successfully manufactured the Ni/Ti/Nb multilayer composite. The microstructure evolution and mechanical properties of composite during roll (ARB) process were investigated by scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), transmission (TEM), micro-hardness test, tensile tests. results showed that deformation each layer was relatively uniform in initial stage ARB process. After fourth pass, Ni/Ti interface still...
The present study concerns the deformation and fracture behavior of two ferrite–martensite dual phase steels (FMDP660 FMDP780) with different fractions subjected to strain rate (0.001 s−1 1000 s−1) tensile testing. For both steels, yield strength (YS) monotonically increased rates, whereas values ultimate (UTS), uniform elongation (UE) post-uniform (PUE) were maintained stable at low range (0.001–0.1 s−1), followed by a significant increase high levels (0.1–1000 s−1). FMDP780 steel higher...
The effect of four processes on the morphology high chromium ultra-fine bainitic steel, especially blocky retained austenite (BRA), and properties is investigated in this paper. In all samples, samples under conventional austempering at 330 °C (CA-330) has more contend (32.5%), but ultimate tensile strength total elongation are lowest, namely 1487 MPa 3.0%, because BRA ( average dimension, 6.16 μm) rapidly transforming into hard brittle martensite during testing. Compared with mechanical...
Quenching and partitioning (Q&P) processes were applied to a cold-rolled high strength steel (0.19C-1.26Si-2.82Mn-0.92Ni, wt %). The effects of the prior hot-rolled microstructure on optimum quenching temperature studied steels systematically investigated. was analyzed by means transmission electron microscope (TEM), backscatter diffraction (EBSD) X-ray (XRD). Compared with ferrite pearlite mixture matrix, lower martensite start (Ms) smaller austenite grain size in matrix are main...