Strain rate dependence of the yield stress and strain hardening rate of a single crystal superalloy at intermediate temperature

The effect of temperature and strain rate on the yield stress and deformation mechanism of the DD6 single crystal is investigated. The results show that the strain rate has very limited effect on the yield stress and strain hardening rate at 873K, but has strong effect on both properties at 1073K. T...

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Veröffentlicht in:	Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2015-01, Vol.620, p.198-203
Hauptverfasser:	Tian, L.X., Ma, C.L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Channels Deformation mechanisms Dislocation density Faults Single crystal Single crystals Stalking fault Strain hardening Strain rate Yield stress
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creator	Tian, L.X. Ma, C.L.
description	The effect of temperature and strain rate on the yield stress and deformation mechanism of the DD6 single crystal is investigated. The results show that the strain rate has very limited effect on the yield stress and strain hardening rate at 873K, but has strong effect on both properties at 1073K. The situation at 873K is similar with the single phase γʹ. At 1073K, the strong strain rate dependence of yield stress is due to the operation of stalking faults. The strain rate dependence of strain hardening rate at 1073K is attributed to the difference of the dislocation density in the matrix channels.
doi_str_mv	10.1016/j.msea.2014.10.007
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The results show that the strain rate has very limited effect on the yield stress and strain hardening rate at 873K, but has strong effect on both properties at 1073K. The situation at 873K is similar with the single phase γʹ. At 1073K, the strong strain rate dependence of yield stress is due to the operation of stalking faults. The strain rate dependence of strain hardening rate at 1073K is attributed to the difference of the dislocation density in the matrix channels.</description><identifier>ISSN: 0921-5093</identifier><identifier>EISSN: 1873-4936</identifier><identifier>DOI: 10.1016/j.msea.2014.10.007</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Channels ; Deformation mechanisms ; Dislocation density ; Faults ; Single crystal ; Single crystals ; Stalking fault ; Strain hardening ; Strain rate ; Yield stress</subject><ispartof>Materials science & engineering. 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A, Structural materials : properties, microstructure and processing</title><description>The effect of temperature and strain rate on the yield stress and deformation mechanism of the DD6 single crystal is investigated. The results show that the strain rate has very limited effect on the yield stress and strain hardening rate at 873K, but has strong effect on both properties at 1073K. The situation at 873K is similar with the single phase γʹ. At 1073K, the strong strain rate dependence of yield stress is due to the operation of stalking faults. The strain rate dependence of strain hardening rate at 1073K is attributed to the difference of the dislocation density in the matrix channels.</description><subject>Channels</subject><subject>Deformation mechanisms</subject><subject>Dislocation density</subject><subject>Faults</subject><subject>Single crystal</subject><subject>Single crystals</subject><subject>Stalking fault</subject><subject>Strain hardening</subject><subject>Strain rate</subject><subject>Yield stress</subject><issn>0921-5093</issn><issn>1873-4936</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNp9kMtOxCAUhonRxPHyAq5Yumk9lLZTEjdm4i2ZxIW6JhROHSb0IjAms_LVpY5rV8DP95_kfIRcMcgZsPpmm_cBVV4AK1OQAyyPyII1S56VgtfHZAGiYFkFgp-SsxC2AImEakG-X6NXdqBeRaQGJxwMDhrp2NG4Qbq36AwN0WMIVA2_1xnfKJ84O3wciolWNKSnQ6r9PkTlaNhN6JVz456qSO0Q0fdo7IxH7Oe_uPN4QU465QJe_p3n5P3h_m31lK1fHp9Xd-tMc85jZqBrmlIxZgRHJhoQZYVGd10t2rZsDOdd0SisWkCNUAGUvIJKtLAUvK2LJT8n14e5kx8_dxii7G3Q6JwacNwFyeoakiMQIqHFAdV-DMFjJydve-X3koGcbcutnG3L2facJdupdHsoYVriy6KXQdvZpLEedZRmtP_VfwA1iIrF</recordid><startdate>20150103</startdate><enddate>20150103</enddate><creator>Tian, L.X.</creator><creator>Ma, C.L.</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20150103</creationdate><title>Strain rate dependence of the yield stress and strain hardening rate of a single crystal superalloy at intermediate temperature</title><author>Tian, L.X. ; Ma, C.L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c333t-d0f884a11d93e1980945edcff69bb48d33f28ae5b0ece0500435059b0793b6273</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Channels</topic><topic>Deformation mechanisms</topic><topic>Dislocation density</topic><topic>Faults</topic><topic>Single crystal</topic><topic>Single crystals</topic><topic>Stalking fault</topic><topic>Strain hardening</topic><topic>Strain rate</topic><topic>Yield stress</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tian, L.X.</creatorcontrib><creatorcontrib>Ma, C.L.</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Materials science & engineering. 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The results show that the strain rate has very limited effect on the yield stress and strain hardening rate at 873K, but has strong effect on both properties at 1073K. The situation at 873K is similar with the single phase γʹ. At 1073K, the strong strain rate dependence of yield stress is due to the operation of stalking faults. The strain rate dependence of strain hardening rate at 1073K is attributed to the difference of the dislocation density in the matrix channels.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.msea.2014.10.007</doi><tpages>6</tpages></addata></record>
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subjects	Channels Deformation mechanisms Dislocation density Faults Single crystal Single crystals Stalking fault Strain hardening Strain rate Yield stress
title	Strain rate dependence of the yield stress and strain hardening rate of a single crystal superalloy at intermediate temperature
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