Effect of Al on structure and mechanical properties of Fe-Mn-Cr-Ni-Al non-equiatomic high entropy alloys with high Fe content

Microstructure and mechanical properties of the Fe-Mn-Cr-Ni-Al system non-equiatomic high entropy alloys with a different Al content (x = 0–14 at.%) were studied in the present work. The Fe40Mn25Cr20Ni15 alloy was composed of the face-centered cubic (fcc) matrix phase with a small amount of coarse b...

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Veröffentlicht in:Journal of alloys and compounds 2019-01, Vol.770, p.194-203
Hauptverfasser: Stepanov, N.D., Shaysultanov, D.G., Chernichenko, R.S., Tikhonovsky, M.A., Zherebtsov, S.V.
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container_title Journal of alloys and compounds
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creator Stepanov, N.D.
Shaysultanov, D.G.
Chernichenko, R.S.
Tikhonovsky, M.A.
Zherebtsov, S.V.
description Microstructure and mechanical properties of the Fe-Mn-Cr-Ni-Al system non-equiatomic high entropy alloys with a different Al content (x = 0–14 at.%) were studied in the present work. The Fe40Mn25Cr20Ni15 alloy was composed of the face-centered cubic (fcc) matrix phase with a small amount of coarse body-centered cubic (bcc) particles. Addition of a small amount of Al (x = 2–6) resulted in an increase in the fraction of the bcc phase to 26% and the formation of fine B2 precipitates within the bcc phase. At higher amounts of Al (x = 10 and x = 14) the microstructure consisted of coarse bcc matrix grains with the B2 precipitates inside. The alloys tend to become stronger with an increase in the Al content from 0 to 10 at.%; further increase in Al concentration did not influence strength considerably. The alloys exhibited pronounced softening with an increase in testing temperature from 25 to 400 °C–600 °C. Ductility of the alloys was high enough (>50%) at all temperatures. A quasi-binary Fe40Mn25Cr20Ni15-Al phase diagram was constructed using a ThermoCalc software and a TCHEA2 database; reasonable agreement between the experimental and predicted phase compositions of the alloys was obtained. It was suggested that an addition of the strong bcc-stabilizing and compound-forming Al to a bcc-prone Fe40Mn25Cr20Ni15 alloy is beneficial for the development of the alloys with the disordered bcc matrix and the embedded B2 precipitates having attractive mechanical properties. •(Fe40Mn25Cr20Ni15)100-xAlx (x = 0–14 at.%) high entropy alloys were arc melted.•X = 0–6 alloys were mixtures of fcc and bcc phases.•X = 10–14 alloys had bcc matrix with B2 precipitates.•Reasonable agreement with ThermoCalc phase diagram was found.•Bcc/B2 alloys had high strength and ductility in compression at T ≤ 400 °C.
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The Fe40Mn25Cr20Ni15 alloy was composed of the face-centered cubic (fcc) matrix phase with a small amount of coarse body-centered cubic (bcc) particles. Addition of a small amount of Al (x = 2–6) resulted in an increase in the fraction of the bcc phase to 26% and the formation of fine B2 precipitates within the bcc phase. At higher amounts of Al (x = 10 and x = 14) the microstructure consisted of coarse bcc matrix grains with the B2 precipitates inside. The alloys tend to become stronger with an increase in the Al content from 0 to 10 at.%; further increase in Al concentration did not influence strength considerably. The alloys exhibited pronounced softening with an increase in testing temperature from 25 to 400 °C–600 °C. Ductility of the alloys was high enough (&gt;50%) at all temperatures. A quasi-binary Fe40Mn25Cr20Ni15-Al phase diagram was constructed using a ThermoCalc software and a TCHEA2 database; reasonable agreement between the experimental and predicted phase compositions of the alloys was obtained. It was suggested that an addition of the strong bcc-stabilizing and compound-forming Al to a bcc-prone Fe40Mn25Cr20Ni15 alloy is beneficial for the development of the alloys with the disordered bcc matrix and the embedded B2 precipitates having attractive mechanical properties. •(Fe40Mn25Cr20Ni15)100-xAlx (x = 0–14 at.%) high entropy alloys were arc melted.•X = 0–6 alloys were mixtures of fcc and bcc phases.•X = 10–14 alloys had bcc matrix with B2 precipitates.•Reasonable agreement with ThermoCalc phase diagram was found.•Bcc/B2 alloys had high strength and ductility in compression at T ≤ 400 °C.</description><identifier>ISSN: 0925-8388</identifier><identifier>EISSN: 1873-4669</identifier><identifier>DOI: 10.1016/j.jallcom.2018.08.093</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>A: Metals and alloys ; Alloy development ; Alloy systems ; B: Mechanical properties ; Binary systems ; Chemical precipitation ; Chromium ; Diagrams ; Ductility tests ; Entropy ; High entropy alloys ; Iron ; Manganese ; Mechanical properties ; Microstructure ; Nickel ; Phase diagrams ; Precipitates</subject><ispartof>Journal of alloys and compounds, 2019-01, Vol.770, p.194-203</ispartof><rights>2018 Elsevier B.V.</rights><rights>Copyright Elsevier BV Jan 5, 2019</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c337t-758f015db663541c19c09d5fbfd613fb9a11531309509cf4b69d5b80b71b97623</citedby><cites>FETCH-LOGICAL-c337t-758f015db663541c19c09d5fbfd613fb9a11531309509cf4b69d5b80b71b97623</cites><orcidid>0000-0003-2476-3953</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jallcom.2018.08.093$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Stepanov, N.D.</creatorcontrib><creatorcontrib>Shaysultanov, D.G.</creatorcontrib><creatorcontrib>Chernichenko, R.S.</creatorcontrib><creatorcontrib>Tikhonovsky, M.A.</creatorcontrib><creatorcontrib>Zherebtsov, S.V.</creatorcontrib><title>Effect of Al on structure and mechanical properties of Fe-Mn-Cr-Ni-Al non-equiatomic high entropy alloys with high Fe content</title><title>Journal of alloys and compounds</title><description>Microstructure and mechanical properties of the Fe-Mn-Cr-Ni-Al system non-equiatomic high entropy alloys with a different Al content (x = 0–14 at.%) were studied in the present work. The Fe40Mn25Cr20Ni15 alloy was composed of the face-centered cubic (fcc) matrix phase with a small amount of coarse body-centered cubic (bcc) particles. Addition of a small amount of Al (x = 2–6) resulted in an increase in the fraction of the bcc phase to 26% and the formation of fine B2 precipitates within the bcc phase. At higher amounts of Al (x = 10 and x = 14) the microstructure consisted of coarse bcc matrix grains with the B2 precipitates inside. The alloys tend to become stronger with an increase in the Al content from 0 to 10 at.%; further increase in Al concentration did not influence strength considerably. The alloys exhibited pronounced softening with an increase in testing temperature from 25 to 400 °C–600 °C. Ductility of the alloys was high enough (&gt;50%) at all temperatures. A quasi-binary Fe40Mn25Cr20Ni15-Al phase diagram was constructed using a ThermoCalc software and a TCHEA2 database; reasonable agreement between the experimental and predicted phase compositions of the alloys was obtained. It was suggested that an addition of the strong bcc-stabilizing and compound-forming Al to a bcc-prone Fe40Mn25Cr20Ni15 alloy is beneficial for the development of the alloys with the disordered bcc matrix and the embedded B2 precipitates having attractive mechanical properties. •(Fe40Mn25Cr20Ni15)100-xAlx (x = 0–14 at.%) high entropy alloys were arc melted.•X = 0–6 alloys were mixtures of fcc and bcc phases.•X = 10–14 alloys had bcc matrix with B2 precipitates.•Reasonable agreement with ThermoCalc phase diagram was found.•Bcc/B2 alloys had high strength and ductility in compression at T ≤ 400 °C.</description><subject>A: Metals and alloys</subject><subject>Alloy development</subject><subject>Alloy systems</subject><subject>B: Mechanical properties</subject><subject>Binary systems</subject><subject>Chemical precipitation</subject><subject>Chromium</subject><subject>Diagrams</subject><subject>Ductility tests</subject><subject>Entropy</subject><subject>High entropy alloys</subject><subject>Iron</subject><subject>Manganese</subject><subject>Mechanical properties</subject><subject>Microstructure</subject><subject>Nickel</subject><subject>Phase diagrams</subject><subject>Precipitates</subject><issn>0925-8388</issn><issn>1873-4669</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNqFUE1LAzEQDaJgrf4EIeA5a6bpfuQkpbQqVL3oOexmE5tlm7RJVunB_25qexcG5vA-Zt5D6BZoBhSK-y7r6r6XbpNNKFQZTcPZGRpBVTIyLQp-jkaUT3JSsaq6RFchdJRS4AxG6GehtZIRO41nPXYWh-gHGQevcG1bvFFyXVsj6x5vvdsqH40KB_JSkRdL5p68GpKE1lmidoOpo9sYidfmc42VjUmyx-k3tw_428T1EVgqLJ2NCb9GF7rug7o57TH6WC7e509k9fb4PJ-tiGSsjKTMK00hb5uiYPkUJHBJeZvrRrcFMN3wGiBnwCjPKZd62hQJbSralNDwspiwMbo7-qYQu0GFKDo3eJtOigkwqBiDP1Z-ZEnvQvBKi603m9rvBVBxaFp04tS0ODQtaBrOku7hqFMpwpdRXgRplJWqNT51K1pn_nH4BSCgiao</recordid><startdate>20190105</startdate><enddate>20190105</enddate><creator>Stepanov, N.D.</creator><creator>Shaysultanov, D.G.</creator><creator>Chernichenko, R.S.</creator><creator>Tikhonovsky, M.A.</creator><creator>Zherebtsov, S.V.</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0003-2476-3953</orcidid></search><sort><creationdate>20190105</creationdate><title>Effect of Al on structure and mechanical properties of Fe-Mn-Cr-Ni-Al non-equiatomic high entropy alloys with high Fe content</title><author>Stepanov, N.D. ; Shaysultanov, D.G. ; Chernichenko, R.S. ; Tikhonovsky, M.A. ; Zherebtsov, S.V.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c337t-758f015db663541c19c09d5fbfd613fb9a11531309509cf4b69d5b80b71b97623</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>A: Metals and alloys</topic><topic>Alloy development</topic><topic>Alloy systems</topic><topic>B: Mechanical properties</topic><topic>Binary systems</topic><topic>Chemical precipitation</topic><topic>Chromium</topic><topic>Diagrams</topic><topic>Ductility tests</topic><topic>Entropy</topic><topic>High entropy alloys</topic><topic>Iron</topic><topic>Manganese</topic><topic>Mechanical properties</topic><topic>Microstructure</topic><topic>Nickel</topic><topic>Phase diagrams</topic><topic>Precipitates</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Stepanov, N.D.</creatorcontrib><creatorcontrib>Shaysultanov, D.G.</creatorcontrib><creatorcontrib>Chernichenko, R.S.</creatorcontrib><creatorcontrib>Tikhonovsky, M.A.</creatorcontrib><creatorcontrib>Zherebtsov, S.V.</creatorcontrib><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of alloys and compounds</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Stepanov, N.D.</au><au>Shaysultanov, D.G.</au><au>Chernichenko, R.S.</au><au>Tikhonovsky, M.A.</au><au>Zherebtsov, S.V.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Al on structure and mechanical properties of Fe-Mn-Cr-Ni-Al non-equiatomic high entropy alloys with high Fe content</atitle><jtitle>Journal of alloys and compounds</jtitle><date>2019-01-05</date><risdate>2019</risdate><volume>770</volume><spage>194</spage><epage>203</epage><pages>194-203</pages><issn>0925-8388</issn><eissn>1873-4669</eissn><abstract>Microstructure and mechanical properties of the Fe-Mn-Cr-Ni-Al system non-equiatomic high entropy alloys with a different Al content (x = 0–14 at.%) were studied in the present work. The Fe40Mn25Cr20Ni15 alloy was composed of the face-centered cubic (fcc) matrix phase with a small amount of coarse body-centered cubic (bcc) particles. Addition of a small amount of Al (x = 2–6) resulted in an increase in the fraction of the bcc phase to 26% and the formation of fine B2 precipitates within the bcc phase. At higher amounts of Al (x = 10 and x = 14) the microstructure consisted of coarse bcc matrix grains with the B2 precipitates inside. The alloys tend to become stronger with an increase in the Al content from 0 to 10 at.%; further increase in Al concentration did not influence strength considerably. The alloys exhibited pronounced softening with an increase in testing temperature from 25 to 400 °C–600 °C. Ductility of the alloys was high enough (&gt;50%) at all temperatures. A quasi-binary Fe40Mn25Cr20Ni15-Al phase diagram was constructed using a ThermoCalc software and a TCHEA2 database; reasonable agreement between the experimental and predicted phase compositions of the alloys was obtained. It was suggested that an addition of the strong bcc-stabilizing and compound-forming Al to a bcc-prone Fe40Mn25Cr20Ni15 alloy is beneficial for the development of the alloys with the disordered bcc matrix and the embedded B2 precipitates having attractive mechanical properties. •(Fe40Mn25Cr20Ni15)100-xAlx (x = 0–14 at.%) high entropy alloys were arc melted.•X = 0–6 alloys were mixtures of fcc and bcc phases.•X = 10–14 alloys had bcc matrix with B2 precipitates.•Reasonable agreement with ThermoCalc phase diagram was found.•Bcc/B2 alloys had high strength and ductility in compression at T ≤ 400 °C.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jallcom.2018.08.093</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0003-2476-3953</orcidid><oa>free_for_read</oa></addata></record>
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subjects A: Metals and alloys
Alloy development
Alloy systems
B: Mechanical properties
Binary systems
Chemical precipitation
Chromium
Diagrams
Ductility tests
Entropy
High entropy alloys
Iron
Manganese
Mechanical properties
Microstructure
Nickel
Phase diagrams
Precipitates
title Effect of Al on structure and mechanical properties of Fe-Mn-Cr-Ni-Al non-equiatomic high entropy alloys with high Fe content
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