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Design and performance of weld filler metal to match an advanced heat- resistant Fe-Cr-Ni alloy

机译：与先进的耐热Fe-Cr-Ni合金匹配的焊缝金属的设计和性能

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摘要

In the present study, a novel welding filler metal with alloying system of Fe–22.5Cr–25Ni–2Mn–0.45Si–1.5Co–3.8W–3Cu–0.5Nb–0.2N–C–B was manufactured to match an advanced heat-resistant alloy Sanicro 25. The corresponding all-weld-metal deposits were prepared to carry out microstructure and mechanical properties inspection with compared to Sanicro 25. Elemental redistribution occurs in interfaces between intermediate layer and deposited metal, which has an influence on toughness and microhardness. The filler metal presents superior strengths than Sanicro 25, which was checked by comparatively calculating the yield tensile stress. Transmission electron microscope observation verified the existence of nano-sized precipitation in the deposit after high-temperature tests. Moreover, the quantitative fractography analysis were conducted over the ruptured specimens after tensile tests, which confirms the influence of element boron on eradicating the coarse intergranular carbides.
机译：在本研究中，制造了一种新的具有Fe–22.5Cr–25Ni–2Ni–2Mn–0.45Si–1.5Co–3.8W–3Cu–0.5Nb–0.2N–C–B合金化体系的焊接填充金属耐磨合金Sanicro25。与Sanicro 25相比，准备了相应的全焊接金属沉积物以进行显微组织和力学性能检查。元素再分布发生在中间层和沉积金属之间的界面中，这对韧性和显微硬度有影响。填充金属具有比Sanicro 25更高的强度，后者是通过比较计算屈服拉伸应力来检查的。透射电子显微镜观察证实，高温测试后，沉积物中存在纳米级沉淀。此外，在拉伸试验后对断裂的样品进行了定量的形貌分析，这证实了硼元素对消除粗晶间碳化物的影响。

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  • 来源
    《Materials Science and Engineering》 |2018年第4期|103-116|共14页
  • 作者

    Yu Zhang; Hongyang Jing; Lianyong Xu; Yongdian Han; Lei Zhao; Dengfeng Wang; Bo Xiao;

  • 作者单位

    School of Materials Science and Engineering, Tianjin University,Tianjin Key Laboratory of Advanced Joining Technology;

    School of Materials Science and Engineering, Tianjin University,Tianjin Key Laboratory of Advanced Joining Technology;

    School of Materials Science and Engineering, Tianjin University,Tianjin Key Laboratory of Advanced Joining Technology;

    School of Materials Science and Engineering, Tianjin University,Tianjin Key Laboratory of Advanced Joining Technology;

    School of Materials Science and Engineering, Tianjin University,Tianjin Key Laboratory of Advanced Joining Technology;

    Kunshan Gintune Welding Co., Ltd;

    School of Materials Science and Engineering, Tianjin University,Tianjin Key Laboratory of Advanced Joining Technology;

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

    Weld filler metal development; Heat-resistant alloy; Nano-sized precipitation;

    机译：焊接填充金属的发展;耐热合金;纳米级析出;

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