Xianghui Huang, Nan Kang, Qingzheng Wang, Mohamed El Mansori, Fabrice Guittonneau
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Wear of directed energy deposited H13 steel as a function of its graded microstructure
The processing parameters of directed energy deposition (DED) H13 steel were first optimized by analyzing their effects on the molten pool. Then, the microstructure, hardness and wear behavior of DED H13 steels and their correlations were investigated in detail. The wear resistances at the matrix, bottom, and top of the DED H13 steel were experimentally determined. The dominant wear modes at the top and bottom are oxidative wear and delamination, and those at the matrix are abrasion. According to the microstructure and finite element analyses, the graded structure induced by intrinsic heat treatment during the DED process controls the microstructure evolution and hence the wear performance.
期刊介绍：
Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International.
Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.
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