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Abstract：
DIN 16MnCr5 is commonly used in mechanical engineering contact applications such as gears, joint parts, shafts, gear wheels, camshafts, bolts, pins, and cardan joints, among others. This study examined the microstructural and mechanical properties and tribological behavior of different surface treatments applied to DIN 16MnCr5 steel. The samples were hardened at 870 °C for 15 min and then quenched in water. The surface conditions evaluated were as follows: quenched and tempered DIN 16MnCr5 steel samples without surface treatments (control group), quenched and tempered DIN 16MnCr5 steel samples with gas-nitriding at 560 °C for 6 h, quenched and tempered DIN 16MnCr5 steel samples with pack boriding at 950 °C for 4 h, and quenched and tempered DIN 16MnCr5 steel samples with duplex gas-nitriding and pack boriding. Microstructure characterization was carried out using metallographic techniques, optical microscopy, scanning electron microscopy with energy-dispersive spectroscopy, and X-ray diffraction. The mechanical properties were assessed through microhardness and elastic modulus tests using nanoindentation. The tribological behavior was evaluated using pin-on-disc tests following the ASTM G99-17 standard procedure under dry sliding conditions. The results indicated that the surface treated with duplex gas-nitriding and pack boriding exhibited the highest wear resistance and a reduced coefficient of friction due to improved mechanical properties, leading to increased hardness and elastic modulus.
摘要：
DIN16MnCr5通常用于机械工程接触应用，如齿轮，接头零件,轴,齿轮,凸轮轴,螺栓,别针,和卡丹·关节，在其他人中。这项研究检查了应用于DIN16MnCr5钢的不同表面处理的微观结构和力学性能以及摩擦学行为。将样品在870°C下硬化15分钟,然后在水中淬火。评估的表面条件如下：未经表面处理的淬火和回火的DIN16MnCr5钢样品（对照组），淬火和回火DIN16MnCr5钢样品，在560°C下进行气体氮化6h，淬火和回火的DIN16MnCr5钢样品，在950°C下进行4h，以及淬火和回火的DIN16MnCr5钢样品，具有双重气体氮化和充填渗硼。显微组织的表征进行了使用金相技术，光学显微镜,扫描电子显微镜与能量色散谱，和X射线衍射。通过使用纳米压痕的显微硬度和弹性模量测试来评估机械性能。在干滑动条件下,按照ASTMG99-17标准程序,使用销-盘测试评价摩擦学行为。结果表明，双相气体氮化和填料渗硼处理的表面表现出最高的耐磨性和降低的摩擦系数，由于改善的机械性能。导致硬度和弹性模量增加。
