<?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>2224-5421</journal-id>
<journal-title><![CDATA[Revista Cubana de Química]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cub Quim]]></abbrev-journal-title>
<issn>2224-5421</issn>
<publisher>
<publisher-name><![CDATA[Ediciones UO, Universidad de Oriente]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2224-54212022000300522</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Simulación de las transformaciones de fases de la aleación termorresistente HK 40 modificada]]></article-title>
<article-title xml:lang="en"><![CDATA[Simulation of the phase transformations of the modified heat resistant alloy HK 40]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mariño-Cala]]></surname>
<given-names><![CDATA[Maritza]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Hechavarría]]></surname>
<given-names><![CDATA[Yanier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mascarell-Batista]]></surname>
<given-names><![CDATA[Ángel Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martorell-Fernández]]></surname>
<given-names><![CDATA[Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Oriente  ]]></institution>
<addr-line><![CDATA[Santiago de Cuba ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>34</volume>
<numero>3</numero>
<fpage>522</fpage>
<lpage>544</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2224-54212022000300522&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2224-54212022000300522&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2224-54212022000300522&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En este trabajo se realiza la simulación del diagrama de fases de la aleación termorresistente ACI HK 40, modificada con la adición de diferentes contenidos de aluminio y boro, utilizando el software Thermo-Calc. La aplicación del mismo permitió obtener el diagrama de fases, y evaluar la evolución de las fracciones de fases sólidas, durante la solidificación en condiciones de equilibrio, en los rangos de temperatura y composición pertenecientes a las zonas de precipitación de las fases obtenidas, en correspondencia con las propiedades mecánicas estimadas. Además, se pronosticó la evolución de la microestructura del acero al someterlo a elevadas temperaturas; se previó la precipitación de fases secundarias indeseadas como las fases sigma (&#963;), y se predijo la viabilidad de aplicar tratamientos térmicos para inducir la precipitación de dichas fases secundarias, que podrían incrementar la termo-resistencia de la aleación.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT In this work, the simulation of the phase diagram of the heat-resistant alloy ACI HK 40 modified with the addition of different contents of elements such as aluminum and boron is carried out, using the Thermo-Calc Software. Its application allowed obtaining the phase diagram and evaluating the evolution of the fractions of solid phases, during solidification, under equilibrium conditions in the temperature and composition ranges corresponding to the precipitation windows of the phases obtained in correspondence with the estimated mechanical properties. As well as, the evolution of the microstructure of the steel when subjected to high temperatures is predicted, prevent the precipitation of unwanted secondary phases such as the sigma phases (&#963;) and predict the feasibility of applying thermal treatments to induce the precipitation of said secondary phases that could increase the alloy heat resistance.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[ACI HK 40]]></kwd>
<kwd lng="es"><![CDATA[simulación]]></kwd>
<kwd lng="es"><![CDATA[transformaciones de fase]]></kwd>
<kwd lng="es"><![CDATA[método teórico]]></kwd>
<kwd lng="es"><![CDATA[aleación termorresistente]]></kwd>
<kwd lng="en"><![CDATA[ACI HK 40]]></kwd>
<kwd lng="en"><![CDATA[simulation]]></kwd>
<kwd lng="en"><![CDATA[phase transformations]]></kwd>
<kwd lng="en"><![CDATA[theoretical method]]></kwd>
<kwd lng="en"><![CDATA[heat resistant alloy]]></kwd>
</kwd-group>
</article-meta>
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