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GCr15钢是一种高碳铬钢,广泛用于制作轴承、量具、冷冲模等。服役条件要求 GCr15钢具有高硬度、高耐磨性、高强度及接触疲劳抗力。除控制钢的成分和冶金质量外,还要通过适当的热处理才能满足要求。本文的工作主要在于弄清 GCr15钢中马氏体转变量及耐磨性随热处理工艺变化的规律及原因,从而为生产应用提供依据。材料是工业用 GCr15钢,经球化退火,组织为细粒状珠光体。加工成15mm×20mm×3mmX 射线衍射试样及(?)40mm×10mm 的耐磨试样。淬火加热用中温盐浴炉。用 APD·10型全自动 X 射线衍射仪,
GCr15 steel is a high carbon chromium steel, widely used in the production of bearings, measuring tools, die and so on. Service conditions GCr15 steel with high hardness, high wear resistance, high strength and contact fatigue resistance. In addition to controlling the composition and metallurgical quality of the steel, adequate heat treatment is required to meet the requirements. The main work of this paper is to find out the rules and causes of martensite transformation and wear resistance of GCr15 steel with heat treatment process, so as to provide basis for production and application. The material is GCr15 steel for industrial use, which is spheroidized and annealed to form fine-grained pearlite. Processed into 15mm × 20mm × 3mm X-ray diffraction samples and (?) 40mm × 10mm wear-resistant specimens. Quenching heating with temperature salt bath furnace. With APD · 10 automatic X-ray diffractometer,