<?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>0188-6266</journal-id>
<journal-title><![CDATA[Acta universitaria]]></journal-title>
<abbrev-journal-title><![CDATA[Acta univ]]></abbrev-journal-title>
<issn>0188-6266</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Guanajuato, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-62662019000100249</article-id>
<article-id pub-id-type="doi">10.15174/au.2019.2351</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Microstructure and mechanical properties of AISI 439 ferritic stainless steel welds without filler metal]]></article-title>
<article-title xml:lang="es"><![CDATA[Microestructura y propiedades mecánicas de soldaduras de acero inoxidable ferrítico 439 sin metal de aporte]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Salgado Lopez]]></surname>
<given-names><![CDATA[Juan Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Preud´homme]]></surname>
<given-names><![CDATA[Marc]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López Monroy]]></surname>
<given-names><![CDATA[Francisco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ojeda Elizarráraz]]></surname>
<given-names><![CDATA[José Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Toscano Giles]]></surname>
<given-names><![CDATA[Arturo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Ingeniería y Desarrollo Industrial Laboratorio de metalografía y análisis de falla, Tecnología de materiales ]]></institution>
<addr-line><![CDATA[Querétaro ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico de Querétaro  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<volume>29</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-62662019000100249&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-62662019000100249&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-62662019000100249&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In literature, it has been reported that a current intensity lower than 120 A leads to a microstructure without grain growth in the heat affected zone (HAZ) of ferritic stainless steel welds. Nevertheless, in technical literature there is little information about the reduction in mechanical properties of ferritic stainless steel welds without filler metal due to grain growth in the HAZ. In this work, thin plates of ferritic stainless 439 steel were welded using pulse current gas tungsten arc welding (P-GTAW) without filler metal. The microstructures in the HAZ were analyzed and the mechanical properties on the welded joint were found by tensile test. This was carried out by cutting samples for the tensile test from the weldments and then tested in a universal testing machine. The fracture surface were observed using scanning electron microscope.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En la literatura sobre soldadura de acero inoxidable ferrítico ha sido reportado que una intensidad de corriente de soldadura menor a 120 A da lugar a una microestructura sin crecimiento de grano en la zona afectada térmicamente (ZAT). No obstante, en la literatura técnica existe muy poca información acerca de la reducción en las propiedades mecánicas de las uniones soldadas de acero AISI 439, usando el proceso de soldadura de arco con electrodo de tungsteno con corriente pulsada sin metal de aporte (P-GTAW, por sus siglas en inglés). En este trabajo, las microestructuras en la ZAT fueron analizadas y las propiedades mecánicas determinadas por ensayo mecánico a la tensión. Esto fue hecho en muestras cortadas para ensayo de las uniones soldadas y ensayadas en una máquina de ensayos universal. Las superficies de fractura fueron observadas utilizando microscopia electrónica de barrido.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Properties]]></kwd>
<kwd lng="en"><![CDATA[microstructure]]></kwd>
<kwd lng="en"><![CDATA[grain growth]]></kwd>
<kwd lng="en"><![CDATA[ferritic stainless steel]]></kwd>
<kwd lng="en"><![CDATA[welding]]></kwd>
<kwd lng="es"><![CDATA[Propiedades]]></kwd>
<kwd lng="es"><![CDATA[microestructura]]></kwd>
<kwd lng="es"><![CDATA[crecimiento de grano]]></kwd>
<kwd lng="es"><![CDATA[acero inoxidable ferrítico]]></kwd>
<kwd lng="es"><![CDATA[soldadura]]></kwd>
</kwd-group>
</article-meta>
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