High temperature wear and frictional properties of duplex-treated tool steel sliding against a two phase brass
High temperature wear and frictional properties of duplex-treated tool steel sliding against a two phase brass
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DOI：
10.1016/j.ceramint.2014.07.151
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发表时间：
2014-12
影响因子：
5.2
通讯作者：
I. Ebrahimzadeh;F. Ashrafizadeh
中科院分区：
文献类型：
--
作者：
I. Ebrahimzadeh;F. Ashrafizadeh
从技术和经济的角度来看，提高黄铜合金热锻模具寿命被认为是至关重要的。在这项研究中，销-盘试验进行了一系列的温度范围内，以评估等离子渗氮和双氮化-物理气相沉积（PVD），包括TiN-TiAlN和TiN-TiAlN-CrAlN涂层，对AISI H13钢的摩擦学性能的影响。通过阴极电弧技术在钢销的表面上沉积PVD涂层。通过显微硬度、纳米压痕、扫描电子显微镜（SEM）、X射线能谱仪（EDS）和X射线衍射仪（XRD）对涂层的力学性能、表面粗糙度和成分进行了测定。在真实的工作条件下，对一种两相黄铜合金进行了热锻性能试验。在250 °C下的销-盘测试的结果显示，黄铜合金在双相TiN-TiAlN涂层表面上的附着力较小。在700 °C下，这种涂层相对更耐氧化，因此，它比其他涂层表现得更好。性能测试表明，与H13热作工具钢模具相比，模具寿命提高了200%。
Improvement of die life in the hot forging of brass alloys is considered vital from both technical and economical points of view. In this research, pin-on- disc tests were carried out at a range of temperatures to evaluate the influence of plasma nitriding and duplex nitriding-physical vapour deposition (PVD), including TiN–TiAlN and TiN–TiAlN–CrAlN coatings, on the tribological properties of AISI H13 steel. PVD coatings were deposited by a cathodic arc technique on the surface of the steel pins. The mechanical properties, surface roughness and composition of the coatings were determined by microhardness, nanoindentaion, Scanning Electron microscopy (SEM) equipped with energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). Performance tests were conducted under real working conditions by hot forging of a two phase brass alloy. The results of pin-on-disc tests at 250 °C revealed the minor adhesion of brass alloy on the surface of duplex TiN–TiAlN coating. At 700 °C, this coating was relatively more resistant to oxidation and thus, it performed better than other coatings. The performance tests indicated improvement of 200% in die life compared to H13 hot work tool steel dies.