Junjie Yang

ORCID: 0000-0003-1821-5061
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About
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Research Areas
  • Advanced ceramic materials synthesis
  • Advanced materials and composites
  • Metal Alloys Wear and Properties
  • High-Temperature Coating Behaviors
  • High Temperature Alloys and Creep
  • Fatigue and fracture mechanics
  • Metallurgy and Material Forming
  • Aluminum Alloys Composites Properties
  • Engineering Structural Analysis Methods
  • Titanium Alloys Microstructure and Properties
  • Additive Manufacturing and 3D Printing Technologies
  • Microstructure and Mechanical Properties of Steels
  • Additive Manufacturing Materials and Processes
  • Metal and Thin Film Mechanics
  • Probabilistic and Robust Engineering Design
  • Welding Techniques and Residual Stresses
  • Structural Integrity and Reliability Analysis
  • Chalcogenide Semiconductor Thin Films
  • Metallurgical Processes and Thermodynamics
  • Subcritical and Supercritical Water Processes
  • Iron and Steelmaking Processes
  • Mechanical Behavior of Composites
  • High-Velocity Impact and Material Behavior
  • Heat transfer and supercritical fluids
  • Intermetallics and Advanced Alloy Properties

University of Science and Technology of China
2023

Tsinghua University
2004-2023

Jinan University
2019-2021

Lanzhou Jiaotong University
2015

Guizhou Minzu University
2014

Guizhou University
2014

State Key Laboratory of New Ceramics and Fine Processing
2004

Virginia Tech
2002

We demonstrated InCl 3 modified SnO 2 as ETL in Sb Se solar cells. post-treatment blocked the downward diffusion of and improved quality /Sb heterojunction. Thus, a Cd-free cell achieved PCE 5.52%.

10.1039/d3ta03358a article EN Journal of Materials Chemistry A 2023-01-01

10.1016/j.jeurceramsoc.2019.10.052 article EN Journal of the European Ceramic Society 2019-11-29

Thermally grown oxide (TGO) is a critical factor for the service life of thermal barrier coatings (TBC). Numerical simulations growth process TGO have become an effective means comprehensively understanding progressive damage TBC system. At present, technologies numerical simulation to include two categories: coupled chemical-mechanical methods and mechanical equivalent methods. The former based on diffusion analysis oxidizing elements, which can describe influence bond coat (BC) consumption...

10.32604/cmes.2022.019528 article EN Computer Modeling in Engineering & Sciences 2022-01-01

Thermal-mechanical fatigue (TMF) tests and isothermal (IF) were conducted using thin-walled tubular specimens under strain-controlled conditions. The results of TMF showed a strong correlation between mechanical behavior temperature cycling. Under different phases loading, the hysteresis loop mean stress single crystal superalloy noticeable variations stress-controlled In test, cycling led to asymmetry additional damage, resulting in significantly lower life compared IF at maximum...

10.3390/cryst13050780 article EN cc-by Crystals 2023-05-08

Considering the influence of non-equibiaxial stress state and initial residual strain on compressive buckling ceramic layer, a quantitative characterization method damage generated at interface between top coat bond in thermal barrier coating based uniaxial compression was developed. It verified by axial tests single crystal specimens with EB-PVD after undergoing various isothermal oxidation times cycles. On this basis, correlations measured interfacial loads experienced as well thickness...

10.3390/coatings12070984 article EN Coatings 2022-07-12

Using nanoindentation technology to analyze the hardness and elastic modulus distributions of local microzones within materials, it can be determined that case-carburized specimen is a composite carburized case pseudo-carburized material in core. The overall mechanical behavior much closer completely material, indicating dominates material. Stress fatigue tests conducted on tubular specimens, solid specimens showed performance slightly lower than due plasticity. However, significantly better...

10.3390/pr11041275 article EN Processes 2023-04-20

The mechanical behavior of case-carburized 18Cr2Ni4WA steel is investigated by an optimization method combined with finite-element simulation based on indentation tests. For a measured load-displacement curve, the uniqueness combination strain hardening exponent and yield stress material discussed analyzing their effects maximum reaction force residual displacement. result shows that curve are more pronounced than those when elastic modulus prior known. An model containing equality...

10.1061/(asce)as.1943-5525.0001035 article EN Journal of Aerospace Engineering 2019-04-30

Surface hardening treatment can usually introduce severe grain distortion with a large gradient in the surface layer. It results mechanical properties being difficult to accurately determine through macroscopic tests due non-uniformity of shot-peened material. In this study, behavior uniformly pre-deformed nickel-based superalloy IN718 was investigated monotonic tensile and instrumented indentation tests. For material, hardness distribution layer after shot peening identified method....

10.3390/ma13061437 article EN Materials 2020-03-21

The influences of the different reactivity cokes on softening‐melting dropping iron‐bearing burden were studied by melting‐dropping experiment. pressure difference and shrinkage rate layer, as well reduction degree at same temperature also analyzed. results show that softening melting starting reduces from 1200 to 1160 °C, end increases 1290 1320 while ending is unchanged molten iron 1413 1380 when coke 24.76 65.16%. Softening‐melting interval with improvement based above temperatures...

10.1002/srin.201400314 article EN steel research international 2014-12-22

The ceramic-matrix composite (CMC) structure is inevitably subjected to cyclic thermal shocks in service, which induces the thermo-mechanical damage. Investigation of damage constitutive model shocked-CMC significance design and performance evaluation such composites aeronautical industry. In present work, monotonic tensile tests were conducted for shocked-CMC. It found that degradation elastic modulus shocked-composites are directly related applied strain. Based on framework continuum...

10.6052/0459-1879-19-229 article EN Chinese Journal of Theoretical and Applied Mechanics 2019-10-21
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