Microstructure and mechanical properties of hot-rolled ZrB alloys
The microstructure, mechanical property behavior, and fracture characteristics of Zr- chi B alloys ( chi =0, 0.05, 0.3, 0.8wt%) obtained by casting and hot-rolling were investigated. Microstructural observation indicated that the dendritic equiaxed prior- beta grain morphology was slightly elongated...
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| Veröffentlicht in: | Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2015-03, Vol.628, p.168-175 |
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| container_title | Materials science & engineering. A, Structural materials : properties, microstructure and processing |
| container_volume | 628 |
| creator | Xia, C.Q. Jiang, X.J. Wang, X.Y. Zhou, Y.K. Feng, Z.H. Liang, S.X. Tan, C.L. Ma, M.Z. Liu, R.P. |
| description | The microstructure, mechanical property behavior, and fracture characteristics of Zr- chi B alloys ( chi =0, 0.05, 0.3, 0.8wt%) obtained by casting and hot-rolling were investigated. Microstructural observation indicated that the dendritic equiaxed prior- beta grain morphology was slightly elongated after hot-rolling treatment. The widths of the alpha lath of all the hot-rolled Zr- chi B alloys were similar, and the length of the alpha lath decreased with increasing boron concentration. Tensile test results showed that the improved strength of the Zr- chi B alloys can be primarily attributed to grain refinement. Strengthening the Zr- chi B alloys could also be achieved by a shear-lag model mechanism because of the high strength and modulus of the ZrB2 whiskers. The refinement of the alpha lath and the presence of the ZrB2 whiskers were responsible for the reduced elongation-to-failure. Fractography indicated that fracture behavior strongly depends on the orientation of the ZrB2 whiskers. The effect of this orientation on the fracture mechanisms of the ZrB2 whiskers and the Zr- chi B alloys was also discussed. |
| doi_str_mv | 10.1016/j.msea.2015.01.052 |
| format | Article |
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Microstructural observation indicated that the dendritic equiaxed prior- beta grain morphology was slightly elongated after hot-rolling treatment. The widths of the alpha lath of all the hot-rolled Zr- chi B alloys were similar, and the length of the alpha lath decreased with increasing boron concentration. Tensile test results showed that the improved strength of the Zr- chi B alloys can be primarily attributed to grain refinement. Strengthening the Zr- chi B alloys could also be achieved by a shear-lag model mechanism because of the high strength and modulus of the ZrB2 whiskers. The refinement of the alpha lath and the presence of the ZrB2 whiskers were responsible for the reduced elongation-to-failure. Fractography indicated that fracture behavior strongly depends on the orientation of the ZrB2 whiskers. The effect of this orientation on the fracture mechanisms of the ZrB2 whiskers and the Zr- chi B alloys was also discussed.</description><identifier>ISSN: 0921-5093</identifier><identifier>DOI: 10.1016/j.msea.2015.01.052</identifier><language>eng</language><subject>Alloys ; Elongation ; Fracture mechanics ; Hot rolling ; Intermetallic compounds ; Mechanical properties ; Microstructure ; Orientation ; Zirconium base alloys</subject><ispartof>Materials science & engineering. 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A, Structural materials : properties, microstructure and processing</title><description>The microstructure, mechanical property behavior, and fracture characteristics of Zr- chi B alloys ( chi =0, 0.05, 0.3, 0.8wt%) obtained by casting and hot-rolling were investigated. Microstructural observation indicated that the dendritic equiaxed prior- beta grain morphology was slightly elongated after hot-rolling treatment. The widths of the alpha lath of all the hot-rolled Zr- chi B alloys were similar, and the length of the alpha lath decreased with increasing boron concentration. Tensile test results showed that the improved strength of the Zr- chi B alloys can be primarily attributed to grain refinement. Strengthening the Zr- chi B alloys could also be achieved by a shear-lag model mechanism because of the high strength and modulus of the ZrB2 whiskers. The refinement of the alpha lath and the presence of the ZrB2 whiskers were responsible for the reduced elongation-to-failure. Fractography indicated that fracture behavior strongly depends on the orientation of the ZrB2 whiskers. The effect of this orientation on the fracture mechanisms of the ZrB2 whiskers and the Zr- chi B alloys was also discussed.</description><subject>Alloys</subject><subject>Elongation</subject><subject>Fracture mechanics</subject><subject>Hot rolling</subject><subject>Intermetallic compounds</subject><subject>Mechanical properties</subject><subject>Microstructure</subject><subject>Orientation</subject><subject>Zirconium base alloys</subject><issn>0921-5093</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNotkDtPwzAUhT2ARCn8ASaPLAn3Ok5rj6XiJRWxwMJiOfaNmsqpi50M_fckguksR-fxMXaHUCLg6uFQ9plsKQDrErCEWlywBWiBRQ26umLXOR8AACXUC7Z571yKeUijG8ZE3B4978nt7bFzNvBTiidKQ0eZx5bv41CkGAJ5_p0euQ0hnvMNu2xtyHT7r0v29fz0uX0tdh8vb9vNrnBCwVBo3coKaolC-aZyoGvltKhAw0p4qdyKHEmUjW7QC71uFVKj2mm2l04J76olu__LnTb9jJQH03fZUQj2SHHMBtdrEFpPFZNV_FnnazlRa06p6206GwQzMzIHMzMyMyMDaCZG1S-xq10W</recordid><startdate>20150301</startdate><enddate>20150301</enddate><creator>Xia, C.Q.</creator><creator>Jiang, X.J.</creator><creator>Wang, X.Y.</creator><creator>Zhou, Y.K.</creator><creator>Feng, Z.H.</creator><creator>Liang, S.X.</creator><creator>Tan, C.L.</creator><creator>Ma, M.Z.</creator><creator>Liu, R.P.</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20150301</creationdate><title>Microstructure and mechanical properties of hot-rolled ZrB alloys</title><author>Xia, C.Q. ; Jiang, X.J. ; Wang, X.Y. ; Zhou, Y.K. ; Feng, Z.H. ; Liang, S.X. ; Tan, C.L. ; Ma, M.Z. ; Liu, R.P.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c280t-99f43054128db3c0958c92309062d48c6ece414b9b1d297f81eb8f092d4c82dc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Alloys</topic><topic>Elongation</topic><topic>Fracture mechanics</topic><topic>Hot rolling</topic><topic>Intermetallic compounds</topic><topic>Mechanical properties</topic><topic>Microstructure</topic><topic>Orientation</topic><topic>Zirconium base alloys</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Xia, C.Q.</creatorcontrib><creatorcontrib>Jiang, X.J.</creatorcontrib><creatorcontrib>Wang, X.Y.</creatorcontrib><creatorcontrib>Zhou, Y.K.</creatorcontrib><creatorcontrib>Feng, Z.H.</creatorcontrib><creatorcontrib>Liang, S.X.</creatorcontrib><creatorcontrib>Tan, C.L.</creatorcontrib><creatorcontrib>Ma, M.Z.</creatorcontrib><creatorcontrib>Liu, R.P.</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. A, Structural materials : properties, microstructure and processing</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Xia, C.Q.</au><au>Jiang, X.J.</au><au>Wang, X.Y.</au><au>Zhou, Y.K.</au><au>Feng, Z.H.</au><au>Liang, S.X.</au><au>Tan, C.L.</au><au>Ma, M.Z.</au><au>Liu, R.P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Microstructure and mechanical properties of hot-rolled ZrB alloys</atitle><jtitle>Materials science & engineering. A, Structural materials : properties, microstructure and processing</jtitle><date>2015-03-01</date><risdate>2015</risdate><volume>628</volume><spage>168</spage><epage>175</epage><pages>168-175</pages><issn>0921-5093</issn><abstract>The microstructure, mechanical property behavior, and fracture characteristics of Zr- chi B alloys ( chi =0, 0.05, 0.3, 0.8wt%) obtained by casting and hot-rolling were investigated. Microstructural observation indicated that the dendritic equiaxed prior- beta grain morphology was slightly elongated after hot-rolling treatment. The widths of the alpha lath of all the hot-rolled Zr- chi B alloys were similar, and the length of the alpha lath decreased with increasing boron concentration. Tensile test results showed that the improved strength of the Zr- chi B alloys can be primarily attributed to grain refinement. Strengthening the Zr- chi B alloys could also be achieved by a shear-lag model mechanism because of the high strength and modulus of the ZrB2 whiskers. The refinement of the alpha lath and the presence of the ZrB2 whiskers were responsible for the reduced elongation-to-failure. Fractography indicated that fracture behavior strongly depends on the orientation of the ZrB2 whiskers. The effect of this orientation on the fracture mechanisms of the ZrB2 whiskers and the Zr- chi B alloys was also discussed.</abstract><doi>10.1016/j.msea.2015.01.052</doi><tpages>8</tpages></addata></record> |
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| source | Elsevier ScienceDirect Journals |
| subjects | Alloys Elongation Fracture mechanics Hot rolling Intermetallic compounds Mechanical properties Microstructure Orientation Zirconium base alloys |
| title | Microstructure and mechanical properties of hot-rolled ZrB alloys |
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