21 Result(s)
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Article
Thermal Deformation Behavior of ZA270.15Ce Alloy: Constitutive Equation, Deep Neural Network Model-Based Prediction, Thermal Processing Map, and Recrystallization Behavior
When the metal undergoes plastic deformation at high temperature, the microstructure of the material will undergo a series of dynamic changes. The microstructure characteristics of the material directly determ...
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Article
The Effect of Hot Forming–Quenching Integrated Process Conditions on Friction and Wear Behavior for AA7075 Alloy
In this paper, the effect of ambient temperature, sliding speed and normal load on friction coefficient and wear mechanism were investigated through end-face testing to simulate the influence of process parame...
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Article
Hot Deformation Behavior of Al-Zn-Mg-Cu Alloy during Compression Tests
Dynamic recrystallization (DRX) plays an important role in microstructure evolution during hot deformation. In this paper, the hot deformation behavior and DRX mechanism of 7075 aluminum alloy were investigate...
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Article
New Insights to Understand the Influence of Nb/Mo on Hydrogen Embrittlement Resistance of Warm-Rolled Medium-Mn Steels
This work elucidated the influence of Nb/Mo on the hydrogen embrittlement (HE) resistance of medium Mn steels (MMS) through an electrochemical cathodic charging method, slow rate tensile tests and microstructu...
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Article
A Medium-Mn Steel Stamped Parts Overcoming Lüders Deformation by Increasing Dislocation Density
This study investigates a novel forming design, that is, intercritical rolling (IR) + low-temperature rolling (LTR) + short-time intercritical annealing (STIA) + one-step stam** (OSS), to decrease or elimina...
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Article
Characteristics of Dissimilar Aluminum/Steel Joint Fabricated Via Self-Riveting Friction Stir Lap Welding
AA7075 aluminum and Q235 steel were successfully joined by self-riveting friction stir lap welding (SR-FSLW). The pre-drilled holes of Q235 were filled by AA7075, achieving the self-riveting process. In additi...
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Article
Microstructure and Bending Properties of Cu-Cr-Zr Alloy Subjected to Heat Treatment and Rolling
The bendability of Cu alloys is a critical property for many electronic components. In this study, the effects of annealing, aging and cold rolling on microstructural evolution and bending properties of Cu-Cr-...
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Article
Consolidation of Pure Magnesium Powder by Equal-Channel Angular Pressing with Back Pressure
Pure Mg particles were consolidated by equal-channel angular pressing (ECAP) with back pressure at 423 K. Fully dense bulk Mg with a homogeneous grain structure was obtained. After multiple passes, grains were...
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Article
Hot Deformation Behavior of a High-Mn Austenitic Steel for Cryogenic Liquified Natural Gas Applications
Hot deformation behavior of a high-Mn austenitic steel was investigated employing hot compression tests at different temperatures and strain rates. The flow behavior related to deformation temperature and stra...
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Article
A Comparative Study on Stationary-Shoulder and Conventional Friction-Stir-Processed Al-6061 Alloy
Al-6061 sheets of 3 mm thickness were subjected to stationary-shoulder friction stir processing (S-FSP) and conventional friction stir processing (C-FSP) using similar processing parameters. The results showed...
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Article
Friction Stir Welded Al-5052 Strengthened by the Hybrid Interlayers and Pin-Eccentric Stir Tool
The hybrid interlayers combined with Zn- and Cu-foil are employed in order to strengthen the mechanical properties of Al-5052 friction stir welded joint. During friction stir welding (FSW), the Zn-foil partly ...
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Article
Hot Deformation Behavior and Processing Map of a Fe-11Mn-10Al-0.9C Duplex Low-Density Steel Susceptible to κ-Carbides
The hot deformation behavior of a Fe-11Mn-10Al-0.9C duplex low-density steel has been investigated, based on a series of isothermal compression tests at temperatures of 800-1100 °C and strain rates of 0.001-10 s−...
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Article
Effect of Tool Pin Eccentricity on the Microstructure and Mechanical Properties of Friction Stir Processed Al-6061 Alloy
Three different stir tools with the pin eccentricity of 0, 0.4 and 0.8 mm were applied to the friction stir processing (FSP) of Al-6061 alloy. Results show that the pin-affected zone (PAZ) enlarges and the gra...
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Article
Water Cooling Effects on the Microstructural Evolution and Mechanical Properties of Friction-Stir-Processed Al-6061 Alloy
Water cooling was applied during friction stir processing (FSP) of an Al-6061 alloy, and it was found that the strengthening efficiency induced by water cooling was varied, which was dependent on the initial b...
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Article
Microstructure and Tensile Properties of a Nb–Mo Microalloyed 6.5Mn Alloy Processed by Intercritical Annealing and Quenching and Partitioning
The transformation behavior, microstructural evolution and mechanical properties were compared in a cold-rolled Nb–Mo microalloyed 6.5Mn alloy after intercritical annealing (IA) and quenching and partitioning ...
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Article
Microstructural and Mechanical Characterization of a Dissimilar Friction Stir-Welded AA5083-AA7B04 Butt Joint
Friction stir welding (FSW) has been used for joining AA5083 and AA7B04 alloy sheets with the aim of studying the microstructure and the mechanical properties of dissimilar FSW joints obtained by varying the i...
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Article
Effect of Partial Replacement of Si with Al on the Microstructures and Mechanical Properties of 1000 MPa TRIP Steels
Two newly synthesized C-Mn-Si-Mo-Nb transformation-induced plasticity (TRIP) steels with and without Al addition were designed in order to achieve significant improvements in the mechanical properties. The ef...
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Article
Effect of Intercritical Annealing Time on the Microstructures and Tensile Properties of a High Strength TRIP Steel
A new Mn–Si–Al–Mo–Nb transformation-induced plasticity steel was annealed by intercritical annealing for different durations to investigate the partitioning of C element and the volume fraction change of the m...
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Article
Microstructural Evolution and Deformation Behavior of a Hot-Rolled and Heat Treated Fe-8Mn-4Al-0.2C Steel
The microstructural evolution following tensile deformation of a hot-rolled and heat treated Fe-8Mn-4Al-0.2C steel was studied. Quenching in the range of 750-800 °C followed by tempering at 200 °C led to a fer...
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Article
Formation of internal cracks during soft reduction in rectangular bloom continuous casting
To investigate the formation of internal cracks in GCr15 bearing steels during the soft reduction process in rectangular bloom continuous casting, fully coupled thermomechanical finite element models were deve...
