<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1815-5944</journal-id>
<journal-title><![CDATA[Ingeniería Mecánica]]></journal-title>
<abbrev-journal-title><![CDATA[Ingeniería Mecánica]]></abbrev-journal-title>
<issn>1815-5944</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Ingeniería Mecánica. Instituto Superior Politécnico "José Antonio Echeverría"]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1815-59442020000100006</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Optimización multiobjetivo del endurecimiento por tratamiento mecánico-térmico reiterado en acero AISI 1045]]></article-title>
<article-title xml:lang="en"><![CDATA[Multiobjective optimization of hardening by using cyclical cold work and aging treatment in AISI 1045 steel]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tchiquendja-Eleno]]></surname>
<given-names><![CDATA[Francisco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alfonso-Brindis]]></surname>
<given-names><![CDATA[Elena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quiza-Sardiñas]]></surname>
<given-names><![CDATA[Ramón]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Quintero]]></surname>
<given-names><![CDATA[Orestes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivas-Santana]]></surname>
<given-names><![CDATA[Marcelino]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Matanzas Centro de Estudio de Fabricación Avanzada y Sostenible ]]></institution>
<addr-line><![CDATA[ Matanzas]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Gobierno Provincial de Lunda-Sur  ]]></institution>
<addr-line><![CDATA[ Lunda-Sur]]></addr-line>
<country>Angola</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Polytechnic College Suriname  ]]></institution>
<addr-line><![CDATA[ Paramaribo]]></addr-line>
<country>Suriname</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad de Matanzas Departamento de Mecánica ]]></institution>
<addr-line><![CDATA[ Matanzas]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<volume>23</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1815-59442020000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1815-59442020000100006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1815-59442020000100006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En el trabajo, se realizó la optimización multiobjetivo del tratamiento mecánico-térmico reiterado de un acero AISI 1045. Como primer paso, se ajustaron modelos de regresión estadística para relacionar las variables tecnológicas con los parámetros de la microdureza (o sea, el incremento de la dureza y su profundidad de penetración), a partir de datos experimentales. La optimización fue llevada a cabo a través de un enfoque a posteriori mediante el método simple de entropía cruzada multiobjetivo. A partir de las soluciones obtenidas, se seleccionó la mejor opción en dependencia de las condiciones prestablecidas, analizándose varios casos como posibles situaciones prácticas. El trabajo mostró la efectividad de la optimización multiobjetivo basada en metaheurísticas para la selección de los parámetros más convenientes del tratamiento mecánico-térmico reiterado, en función de lograr el perfil de microdureza más adecuado.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The work presented the multiobjective optimization of a cyclic cold work and aging treatment of an AISI 1045 steel. As a first step, regression models, for relating the technological variables and the micro-hardness parameters (i.e., the hardness increment and penetration), were fitted from an experimental study. The optimization was carried out by using an a posteriori approach, through the simple multiobjective cross entropy method. From the obtained solutions, the best option was chosen depending on the desired predefined conditions, analyzing several cases as possible practical situations. The work showed the effectiveness of the metaheuristic-based multiobjective optimization for selecting the best working parameters in the cyclic cold work and aging treatment, in order to obtain the most convenient microhardness profile.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[tratamiento mecánico-térmico reiterado]]></kwd>
<kwd lng="es"><![CDATA[optimización multiobjetivo]]></kwd>
<kwd lng="es"><![CDATA[perfil de microdureza]]></kwd>
<kwd lng="es"><![CDATA[Acero AISI 1045]]></kwd>
<kwd lng="en"><![CDATA[cyclic cold work and aging]]></kwd>
<kwd lng="en"><![CDATA[multi-objective optimization]]></kwd>
<kwd lng="en"><![CDATA[micro-hardness profile]]></kwd>
<kwd lng="en"><![CDATA[AISI 1045 steel]]></kwd>
</kwd-group>
</article-meta>
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