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  1. No Access

    Article

    Analysis of Martensitic Transformation Plasticity Under Various Loadings in a Low-Carbon Steel: An Elastoplastic Phase Field Study

    An elastoplastic phase field model for the martensitic transformation of a Fe-0.22C-1.58Mn-0.81Si (wt pct) alloy was developed, to investigate transformation plasticity in response to uniaxial, biaxial, shear ...

    **ng Zhang, Gang Shen, Jun Xu, Jianfeng Gu in Metallurgical and Materials Transactions A (2020)

  2. No Access

    Article

    Effect of Cyclic Intercritical Tempering on the Microstructure and Mechanical Properties of a Low-Carbon Cu-Bearing 7Ni Steel

    High strength and toughness are usually hard to obtain simultaneously because of the trade-off. In this research, cyclic intercritical tempering (IT) was applied to a low-carbon Cu-bearing 7Ni steel to pursue ...

    Wei Hou, Qingdong Liu, Haiming Wen… in Metallurgical and Materials Transactions A (2020)

  3. No Access

    Article

    Microstructure Formation and Tailoring of the Intermetallic TiAl Alloy Produced by Direct Laser Deposition

    This study investigates the microstructure morphology in a single-track wall of Ti-47Al-2Cr-2Nb alloy produced by direct laser deposition. The as-deposited wall mainly exhibited an alternative-band microstruct...

    **nyu Zhang, Chuanwei Li, Haozhang Zhong… in Metallurgical and Materials Transactions A (2020)

  4. Article

    Open Access

    Bainite Transformation Characteristics of High-Si Hypereutectoid Bearing Steel

    In this work, the bainite transformation characteristics of a high-Si hypereutectoid (1.3 wt.% Si, 1 wt.% C) bearing steel was analyzed by means of microstructural observation and dilatometric experiment. The ...

    Zhihui Chen, Jianfeng Gu, Lizhan Han in Metallography, Microstructure, and Analysis (2018)

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  5. No Access

    Article

    Effect of Macrosegregation on the Microstructure and Mechanical Properties of a Pressure-Vessel Steel

    Macrosegregation refers to the chemical segregation, which occurs quite commonly in the large forgings such as nuclear reactor pressure vessel. This work assesses the effect of macrosegregation and homogenizat...

    Guanghua Yan, Lizhan Han, Chuanwei Li… in Metallurgical and Materials Transactions A (2017)

  6. No Access

    Article

    Microstructural Evolution and Carbide Precipitation in a Heat-Treated H13 Hot Work Mold Steel

    The microstructure and carbide precipitation for a H13 hot work mold steel after heat treatment and stabilization treatment at 620 °C for up to 20 h were investigated by optical microscopy, electron backscatte...

    Mu Lin, **ngfeng Zhao, Lizhan Han… in Metallography, Microstructure, and Analysis (2016)

  7. Article

    Open Access

    Crystal metamorphosis at stress extremes: how soft phonons turn into lattice defects

    At 0 K, phonon instability controls the ideal strength and the ultrafast dynamics of defect nucleation in perfect crystals under high stress. However, how a soft phonon evolves into a lattice defect is still u...

    **aohui Liu, Jianfeng Gu, Yao Shen, Ju Li in NPG Asia Materials (2016)

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  8. No Access

    Article

    Effect of Multistage Heat Treatment on Microstructure and Mechanical Properties of High-Strength Low-Alloy Steel

    The influence of Cu-rich precipitates (CRPs) and reverted austenite (RA) on the strength and impact toughness of a Cu-containing 3.5 wt pct Ni high-strength low-alloy (HSLA) steel after various heat treatments...

    Qingdong Liu, Haiming Wen, Han Zhang… in Metallurgical and Materials Transactions A (2016)

  9. No Access

    Article

    On the Role of Ni in Cu Precipitation in Multicomponent Steels

    The nature of Cu precipitation in quench-tempered multicomponent high-strength low-alloy steels is characterized by atom probe tomography. The detected nanometer sized Ni-rich clusters act as preferential nucl...

    Qingdong Liu, Jianfeng Gu, Wenqing Liu in Metallurgical and Materials Transactions A (2013)