Scholarlink

<p>GCr15 bearing steel is a commonly used material for wind power bearings, and its material microstructure characteristics are the key indexes affecting the service life of wind power bearings. In order to analyze the influence of material microstructure characteristics on bearing performance and service life, this paper explores in detail the impact of microstructural characteristics of martensite/bainite bearing steel on its tribological properties under different loading conditions. The results show that compared to martensitic bearing steel, the martensitic bainitic composite bearing steel displays a substructural morphology of entangled dislocations, grains exhibiting an evident optimal orientation, and a notable increase in the density of large-angle grain boundaries. In addition, the distribution of spherical carbides and residual austenite is more dispersed and homogeneous in this microstructure. In tribological performance tests, it was found that the wear rates of bearing steel with martensitic bainite composite microstructure were significantly reduced by 35.9, 37.9, and 55.5% at 40N, 70N, and 100N load conditions, respectively, compared to those of bearing steels with martensitic microstructure. Changes in the microstructure of the bearing steel affect the performance of its strength and toughness, which in turn makes the martensitic bainite composite microstructure of bearing steel show outstanding advantages in wear resistance performance, thus extending the service life of bearings. The research results can provide a reference basis for optimizing the microstructure design of GCr15 bearing steel, to provide data support for the research of high-performance and long-life bearings.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effect of Martensitic and Bainitic Phases with Fine-Grained Microstructural on the Tribological Properties of GCr15 Bearing Steel

  • 期刊论文

  • 发表日期：

    2025年8月8日

查看全文
  • Jianqi Hu,
  • Dianxiu Xia,
  • Qing Han,
  • Mingyuan Zhang,
  • Shouren Wang,
  • Yuquan Cai,
  • Guyi Si,
  • Zonghui Sun,
  • Yuheng Cui,
  • Han Zhang,
  • Taohua Li,
  • Jian Zhang,
  • Lin Cui

摘要

GCr15 bearing steel is a commonly used material for wind power bearings, and its material microstructure characteristics are the key indexes affecting the service life of wind power bearings. In order to analyze the influence of material microstructure characteristics on bearing performance and service life, this paper explores in detail the impact of microstructural characteristics of martensite/bainite bearing steel on its tribological properties under different loading conditions. The results show that compared to martensitic bearing steel, the martensitic bainitic composite bearing steel displays a substructural morphology of entangled dislocations, grains exhibiting an evident optimal orientation, and a notable increase in the density of large-angle grain boundaries. In addition, the distribution of spherical carbides and residual austenite is more dispersed and homogeneous in this microstructure. In tribological performance tests, it was found that the wear rates of bearing steel with martensitic bainite composite microstructure were significantly reduced by 35.9, 37.9, and 55.5% at 40N, 70N, and 100N load conditions, respectively, compared to those of bearing steels with martensitic microstructure. Changes in the microstructure of the bearing steel affect the performance of its strength and toughness, which in turn makes the martensitic bainite composite microstructure of bearing steel show outstanding advantages in wear resistance performance, thus extending the service life of bearings. The research results can provide a reference basis for optimizing the microstructure design of GCr15 bearing steel, to provide data support for the research of high-performance and long-life bearings.