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首页> 外文期刊>Materials Science and Engineering >Improved mechanical properties by nanosize tungsten-molybdenum carbides in tungsten containing hot work die steels
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Improved mechanical properties by nanosize tungsten-molybdenum carbides in tungsten containing hot work die steels

机译：纳米氧化钨碳化物在含有热工作模具钢的钨碳化物的改善机械性能

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摘要

AISIH13 die steel with substitution of tungsten for vanadium (H13-W) was produced through vacuum induction melting and forging, followed by 1050°C-quenching and 600°C-tempering. Through 10-40 h of 600°C-tempering, H13-W exhibits superior red hardness as compared to H13 steel. The increments of hardness (4-6HRC) as well as yield strength were deducted to the precipitated M_6C-type carbides with sizes ranging from 10 nm to 400 run. Two classifications of carbides are identified. Type I of carbides has the nano size of 8-50 nm, and type Ⅱ of undissolved primary carbides ((Fe_(1.34)M0_(1.62)Cr_(2.95)W_(0.09))C) has the bigger size of 100-400 nm. The yield strength increments (Δσ_y) were modeled by a bivariate distribution of nano and undissolved precipitates. The calculated major strengthening effects from type Ⅰ nano carbides in H13-W/H13 steels were close to the deduced values by Hall-Petch theory, they were 1053 MPa and 965.8 MPa, respectively. According to the calculation on equilibrium solubility of precipitations of MoC/Mo_2C and WC/W_2C, it was testified that MoC, Mo_2C, WC and W_2C were wholly dissolved into austenite at 1050°C of quenching, followed by precipitating in large quantities in the form of nanosize carbides at 600°C-tempering.
机译：通过真空诱导熔融和锻造，通过真空感应熔融和锻造，通过真空诱导和锻造，通过真空诱导，然后进行1050°C淬火和600℃的淬火而替代钨钨。通过10-40小时，600°C - 回火，与H13钢相比，H13-W表现出优异的红色硬度。将硬度（4-6HRC）的增量和屈服强度扣除到沉淀的M_6C型碳化物，尺寸范围为10nm至400运行。确定了两种碳化物分类。碳化物的I型具有8-50nm的纳米尺寸，Ⅱ型未溶解的初级碳化物（（Fe_（1.34）M0_（1.62）CR_（2.95）W_（0.09））C）具有100-400的较大尺寸纳米。屈服强度增量（Δσ_y）通过纳米和未溶解的沉淀物的双变量分布进行建模。通过H13-W / H13钢中Ⅰ型纳米碳化物的计算的主要增强效应通过Hall-Petch理论接近推导的值，分别为1053MPa和965.8MPa。根据MOC / MO_2C和WC / W_2C沉淀的平衡溶解度的计算，证明了MOC，MO_2C，WC和W_2C在1050℃下将MOC，MO_2C，WC和W_2C全部溶于奥氏体淬火，然后在形式中大量沉淀纳米型碳化物在600℃的碳水化合物中。

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  • 来源
    《Materials Science and Engineering》 |2021年第22期|141140.1-141140.10|共10页
  • 作者

    Riming Wu; Wei Li; Meng Chen; Shan Huang; Tao Hu;

  • 作者单位

    Shanghai University of Engineering Science School of Material Engineering Shanghai 201600 China Shanghai Collaborative Innovation Center of Laser Advanced Manufacturing Technology Shanghai 201600 China;

    School of Materials Science and Engineering Shanghai JiaoTong University 800 Dongchuan Rd Shanghai 200240 China;

    Shanghai University of Engineering Science School of Material Engineering Shanghai 201600 China Shanghai Collaborative Innovation Center of Laser Advanced Manufacturing Technology Shanghai 201600 China;

    Shanghai University of Engineering Science School of Material Engineering Shanghai 201600 China Shanghai Collaborative Innovation Center of Laser Advanced Manufacturing Technology Shanghai 201600 China;

    Shanghai University of Engineering Science School of Material Engineering Shanghai 201600 China Shanghai Collaborative Innovation Center of Laser Advanced Manufacturing Technology Shanghai 201600 China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Tungsten; AISI H13 steel; Hot work die steel; Quenching and tempering; Red hardness; Inter-phase carbides;

    机译：钨;AISI H13钢;热工作模具钢;淬火和回火;红色硬度;间相碳化物;

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