<?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>1665-6423</journal-id>
<journal-title><![CDATA[Journal of applied research and technology]]></journal-title>
<abbrev-journal-title><![CDATA[J. appl. res. technol]]></abbrev-journal-title>
<issn>1665-6423</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Ciencias Aplicadas y Tecnología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-64232022000400487</article-id>
<article-id pub-id-type="doi">10.22201/icat.24486736e.2022.20.4.1357</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[The effect of fine W precipitates in matrix phase on mechanical properties of tungsten heavy alloys]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Kumari]]></surname>
<given-names><![CDATA[Anjali]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sarkar]]></surname>
<given-names><![CDATA[Rajdeep]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Panchal]]></surname>
<given-names><![CDATA[Ashutosh]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Prabhu]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nandy]]></surname>
<given-names><![CDATA[T. K.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Ministry of Defence Defence Research and Development Organisation Defence Metallurgical Research Laboratory]]></institution>
<addr-line><![CDATA[Hyderabad ]]></addr-line>
<country>India</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<volume>20</volume>
<numero>4</numero>
<fpage>487</fpage>
<lpage>501</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-64232022000400487&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-64232022000400487&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-64232022000400487&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Tungsten heavy alloys 90W-7Ni-3Co (WNC alloy) and 89.6W-6.2Ni-1.8Fe-2.4Co (WNFC alloy), produced using liquid phase sintering followed by thermo-mechanical processing, were investigated for microstructure and mechanical properties. 90W-7Ni-3Co alloy processed following a cyclic heat treatment showed fine tungsten precipitates in the matrix. The alloy, when heat treated at 850°C (the lower temperature of cyclic treatment), formed a W-rich intermetallic phase in the matrix that subsequently dissolved during high temperature (1150°C) solution treatment leaving behind fine W precipitates. On the other hand, the cyclic treatment (850°C/1150°C) of 89.6W-6.2Ni-1.8Fe-2.4Co alloy did not result in precipitation of fine W in the matrix phase. Therefore, the alloy was given a standard solution treatment (1150°C/WQ) resulting in matrix showing a clean microstructure devoid of any precipitates. Both the alloys were subjected to a two stage swaging with intermediate heat treatments. 90W-7Ni-3Co alloy exhibited superior strength, but lower elongation to failure and impact toughness as compared to 89.6W-6.2Ni-1.8Fe-2.4Co alloy. Microstructure-property correlation was undertaken to elucidate the effect of enhanced W dissolution and fine W precipitates (in the matrix) on mechanical behaviour of the alloys investigated.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[W-Ni-Co alloy]]></kwd>
<kwd lng="en"><![CDATA[precipitate]]></kwd>
<kwd lng="en"><![CDATA[dislocation]]></kwd>
<kwd lng="en"><![CDATA[yield strength]]></kwd>
</kwd-group>
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