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\begin{document}

\title{Effects of cathodic arc ion plated CrN and CrAlN coatings on tensile and
fatigue performances of H13 steel}



\author[1]{kong weicheng}%
\author[1]{li kangmei}%
\author[2]{HU JUN}%
\affil[1]{Donghua University}%
\affil[2]{Affiliation not available}%


\vspace{-1em}



  
  \date{May 28, 2024}


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\selectlanguage{english}
\begin{abstract}
Surface coating played a role of material mechanical property, CrN and
CrAlN coatings were deposited on H13 steel to improve its tension and
fatigue performances. The morphologies, phases and nanomechanical
properties of obtained coatings were analyzed using a scanning electron
microscope (SEM), X-ray diffraction (XRD), and nanoindentation tester,
respectively. The effects of CrN and CrAlN coatings on the tensile and
fracture performances of H13 steel were investigated by tensile and
fatigue tests, and the fracture morphologies were observed to analyze
the fracture mechanism. The results show that the CrN and CrAlN coatings
improve the tensile properties of H13 steel, the area work of CrAlN
coated sample is the largest among the three kinds of samples. The
fatigue life of CrN and CrAlN coated samples is 1.52 \selectlanguage{ngerman}× 105 and 1.70 ×
105, respectively, higher 1.01 × 105 than the uncoated sample, the CrN
and CrAlN coatings enhance the fatigue life of substrate. The crack
initiation and propagation of coated samples are suppressed by the
coatings with the high hardness and elastic modulus, which improve their
fatigue performances.%
\end{abstract}\selectlanguage{ngerman}%



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\textbf{Hosted file}

\verb`0825) effects of crn and craln coatings on fa.doc`  available at \url{https://authorea.com/users/354108/articles/477757-effects-of-cathodic-arc-ion-plated-crn-and-craln-coatings-on-tensile-and-fatigue-performances-of-h13-steel}

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