Jingtao Han

Forming Rate Dependence of Novel Austenitising Bending Process for a High-Strength Quenched Micro-Alloyed Steel: Experiments and Simulation

Yao Lu, Jun Wang, Zhou Li, Fei Lin et autres

This austenitising bending investigation was carried out in a vacuum environment with the forming rates of 1, 10, and 100 mm/min under a certain bending temperature of 900 °C by a thermomechanical simulator. The enhanced strength at the accelerated forming rate and …

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MiniMax-01: Scaling Foundation Models with Lightning Attention

MiniMax, Ao Li, Bo Yang, Chang Liu et autres

We introduce MiniMax-01 series, including MiniMax-Text-01 and MiniMax-VL-01, which are comparable to top-tier models while offering superior capabilities in processing longer contexts. The core lies in lightning attention and its efficient scaling. To maximize computational capacity, we integrate it with Mixture of …

Microstructure and Operational Properties of Low-Alloy Low-Carbon Steel for Building Structures

Yongjun Zhang, De-Ming Yao, Man-Ying Chen, Jin-Kai Zhao et autres

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Hot Deformation Behavior of Duplex Stainless Steel 2205

Yongjun Zhang, Hu Jie-ren, Hui Zhang, Jingtao Han

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Influence of partitioning process during Q&P heat treatment on the microstructure and properties of medium carbon cast steel ZG30MnSiMo (1.5 % Mn – 1.5 % Si)

Yongjun Zhang, Sen Liu, Jingtao Han

The microstructure and properties of medium carbon cast steel ZG30MnSiMo(1.5 % Mn – 1.5 % Si) subjected to heat treatment of quenching and partitioning (Q&P) are investigated. The results show that the microstructure of cast steel after this heat treatment mainly consists …

Research on Cold Roll Forming Process of Strips for Truss Rods for Space Construction

Xingwen Yang, Jingtao Han, Ruilong Lu

In this paper, a new technology for on-orbit cold forming of space truss rods is proposed. For the cold roll forming process of asymmetric cross sections of thin strips, the effects of roll gap and roll spacing on the forming of asymmetric …

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Numerical Simulation and Experimental Study of Cold and Hot Composite Forming of Sharp-Edged High-Strength Steel Sections

Wenqiu Yao, Chunjing Wu, Jingtao Han

This paper describes the use of cold and hot composite forming technology to produce pointed curtain wall profiles. An electromagnetic-temperature coupling model was constructed using ANSYS to study the temperature and electromagnetic field distribution during the forming process. Numerical simulation was used …

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Study of the Mechanical Properties and Microstructure of Spiral Tubes and Actuators for Controlled Extension Fabricated with Beryllium Bronze Strips

Ruilong Lu, Jingtao Han, Zhanhua Li, Congfa Zhang et autres

QBe2.0 strips were used to fabricate spiral tubes and actuators for controlled extension (STACERs) through the winding and stabilization method, which is a novel technique for obtaining STACERs. The raw strips and the STACERs were investigated using tensile tests and SEM for …

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Effect of Cold and Hot Compounds Forming on Microstructures and Mechanical Properties in the Deformation Zone of Sharp-Edged High-Strength Steel Sections

Wenqiu Yao, Jingtao Han, Chunjing Wu, Zhongqian Cao

We researched the cold and hot composite-forming process, setting the forming speed at 2 m/min, the induction heating frequency at 40 KHz, and the induction current at 3000 A, and manufactured curtain wall steel with sharp corners. We analyzed the microstructure and …

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Research on forming process of the elastic boom for deep space exploration

Congfa Zhang, Biao Li, Li Lin, Jintong Liu et autres

According to the special needs of deep space exploration, the elastic boom, which is a typical type of the deployment mechanism based on material characteristics has attracted more and more attention. This paper studies the forming technology of the elastic boom. Firstly, …

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Optimising Two-Stage Vacuum Heat Treatment for a High-Strength Micro-Alloyed Steel in Railway Spring Clip Application: Impact on Microstructure and Mechanical Performance

Yao Lu, Jun Wang, Di Pan, Jian Han et autres

The heat treatment process is a vital step for manufacturing high-speed railway spring fasteners. In this study, orthogonal experiments were carried out to obtain reliable optimised heat treatment parameters through a streamlined number of experiments. Results revealed that a better comprehensive mechanical …

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Numerical Study of Ti6Al4V Alloy Tube Heated by Super-Frequency Induction Heating

Cheng Liu, Jingtao Han, Ruilong Lu, Jiawei Liu et autres

Ti6Al4V alloys have a narrow processing window, which complicates temperature control, especially during large-scale production. Therefore, a numerical simulation and experimental study on the ultrasonic induction heating process of a Ti6Al4V titanium alloy tube were conducted to obtain stable heating. The electromagnetic …

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