Microstructural Evolution and Mechanical Properties of Nb-Ti Microalloyed Pipeline Steel
The correlation between microstructures and mechanical properties of a Nb-Ti microalloyed pipeline steel was investigated. The results revealed that with decreasing the finish rolling temperature and the cooling stop temperature, the matrix microstructure was changed from quasi-polygonal ferrite to...
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| Veröffentlicht in: | Journal of iron and steel research, international international, 2011-02, Vol.18 (2), p.57-63 |
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| container_title | Journal of iron and steel research, international |
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| creator | LAN, Liang-yun QIU, Chun-lin ZHAO, De-wen GAO, Xiu-hua |
| description | The correlation between microstructures and mechanical properties of a Nb-Ti microalloyed pipeline steel was investigated. The results revealed that with decreasing the finish rolling temperature and the cooling stop temperature, the matrix microstructure was changed from quasi-polygonal ferrite to acicular ferrite, as a result of improvement of both strength and low temperature toughness. By means of electron backscattered diffraction observation, an effective acicular ferrite packet contained several low angle boundaries or subboundaries plates which made important contributions to improvement of strength. It was found that many fine quasi-polygonal ferrite grains with high angle boundaries as the toughening structure were introduced into the acicular ferrite matrix to refine effective grain size and improve the toughness. |
| doi_str_mv | 10.1016/S1006-706X(11)60024-1 |
| format | Article |
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The results revealed that with decreasing the finish rolling temperature and the cooling stop temperature, the matrix microstructure was changed from quasi-polygonal ferrite to acicular ferrite, as a result of improvement of both strength and low temperature toughness. By means of electron backscattered diffraction observation, an effective acicular ferrite packet contained several low angle boundaries or subboundaries plates which made important contributions to improvement of strength. 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Iron Steel Res. Int</addtitle><addtitle>Journal of Iron and Steel Research</addtitle><description>The correlation between microstructures and mechanical properties of a Nb-Ti microalloyed pipeline steel was investigated. The results revealed that with decreasing the finish rolling temperature and the cooling stop temperature, the matrix microstructure was changed from quasi-polygonal ferrite to acicular ferrite, as a result of improvement of both strength and low temperature toughness. By means of electron backscattered diffraction observation, an effective acicular ferrite packet contained several low angle boundaries or subboundaries plates which made important contributions to improvement of strength. It was found that many fine quasi-polygonal ferrite grains with high angle boundaries as the toughening structure were introduced into the acicular ferrite matrix to refine effective grain size and improve the toughness.</description><subject>acicular ferrite</subject><subject>Applied and Technical Physics</subject><subject>Boundaries</subject><subject>electron backscattered diffraction</subject><subject>Engineering</subject><subject>Ferrite</subject><subject>Iron and steel industry</subject><subject>Machines</subject><subject>Manufacturing</subject><subject>Materials Engineering</subject><subject>Materials Science</subject><subject>mechanical property</subject><subject>Metallic Materials</subject><subject>Microstructure</subject><subject>Niobium</subject><subject>Physical Chemistry</subject><subject>pipeline steel</subject><subject>Processes</subject><subject>Steel making</subject><subject>Structural steels</subject><subject>Toughness</subject><issn>1006-706X</issn><issn>2210-3988</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNqFkF9LHDEUxUNpoYv6EYTBF9uHsbnJTCZ5kiK2CtoKKvgWspk7azQmazKzsN--2T_01bwEkvM7955DyDHQM6AgftwDpaLuqHj6BvBdUMqaGj6RGWNAa66k_Exm_yVfyVHOL3RzlOBMzsjTrbMp5jFNdpyS8dXlKvppdDFUJvTVLdpnE5wtH3cpLjGNDnMVh-rPvH5w1RY23sc19tWdW6J3Aav7EdEfki-D8RmP9vcBefx1-XBxVd_8_X198fOmtg20Yw2cgRFSUhwEtD2yoZWKDl1rhQI0wC1TTYtSoIJ5P28Z71oqQA7lVSnK-AE53fkuU3yfMI_6zWWL3puAccpaStVwKrumKNudchM4Jxz0Mrk3k9YaqN50qbdd6k1RGkBvu9RQOLHjctGHBSb9EqcUSqgPwfMdiCX_yhUwW4fBYu8S2lH30X3ocLJf-TmGxXuZrufGvg7Oo-ZCdKKjiv8DJ3WW0w</recordid><startdate>20110201</startdate><enddate>20110201</enddate><creator>LAN, Liang-yun</creator><creator>QIU, Chun-lin</creator><creator>ZHAO, De-wen</creator><creator>GAO, Xiu-hua</creator><general>Elsevier Ltd</general><general>Springer Singapore</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>W92</scope><scope>~WA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20110201</creationdate><title>Microstructural Evolution and Mechanical Properties of Nb-Ti Microalloyed Pipeline Steel</title><author>LAN, Liang-yun ; QIU, Chun-lin ; ZHAO, De-wen ; GAO, Xiu-hua</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c415t-1321a6880ef615de2f5890f75c691ea13c2945e86e91bdb523750618f94599023</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>acicular ferrite</topic><topic>Applied and Technical Physics</topic><topic>Boundaries</topic><topic>electron backscattered diffraction</topic><topic>Engineering</topic><topic>Ferrite</topic><topic>Iron and steel industry</topic><topic>Machines</topic><topic>Manufacturing</topic><topic>Materials Engineering</topic><topic>Materials Science</topic><topic>mechanical property</topic><topic>Metallic Materials</topic><topic>Microstructure</topic><topic>Niobium</topic><topic>Physical Chemistry</topic><topic>pipeline steel</topic><topic>Processes</topic><topic>Steel making</topic><topic>Structural steels</topic><topic>Toughness</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>LAN, Liang-yun</creatorcontrib><creatorcontrib>QIU, Chun-lin</creatorcontrib><creatorcontrib>ZHAO, De-wen</creatorcontrib><creatorcontrib>GAO, Xiu-hua</creatorcontrib><collection>中文科技期刊数据库</collection><collection>中文科技期刊数据库-CALIS站点</collection><collection>中文科技期刊数据库-7.0平台</collection><collection>中文科技期刊数据库-工程技术</collection><collection>中文科技期刊数据库- 镜像站点</collection><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of iron and steel research, international</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>LAN, Liang-yun</au><au>QIU, Chun-lin</au><au>ZHAO, De-wen</au><au>GAO, Xiu-hua</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Microstructural Evolution and Mechanical Properties of Nb-Ti Microalloyed Pipeline Steel</atitle><jtitle>Journal of iron and steel research, international</jtitle><stitle>J. Iron Steel Res. Int</stitle><addtitle>Journal of Iron and Steel Research</addtitle><date>2011-02-01</date><risdate>2011</risdate><volume>18</volume><issue>2</issue><spage>57</spage><epage>63</epage><pages>57-63</pages><issn>1006-706X</issn><eissn>2210-3988</eissn><abstract>The correlation between microstructures and mechanical properties of a Nb-Ti microalloyed pipeline steel was investigated. The results revealed that with decreasing the finish rolling temperature and the cooling stop temperature, the matrix microstructure was changed from quasi-polygonal ferrite to acicular ferrite, as a result of improvement of both strength and low temperature toughness. By means of electron backscattered diffraction observation, an effective acicular ferrite packet contained several low angle boundaries or subboundaries plates which made important contributions to improvement of strength. 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| ispartof | Journal of iron and steel research, international, 2011-02, Vol.18 (2), p.57-63 |
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| language | eng |
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| source | SpringerLink Journals; Elsevier ScienceDirect Journals; Alma/SFX Local Collection |
| subjects | acicular ferrite Applied and Technical Physics Boundaries electron backscattered diffraction Engineering Ferrite Iron and steel industry Machines Manufacturing Materials Engineering Materials Science mechanical property Metallic Materials Microstructure Niobium Physical Chemistry pipeline steel Processes Steel making Structural steels Toughness |
| title | Microstructural Evolution and Mechanical Properties of Nb-Ti Microalloyed Pipeline Steel |
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