Loading…

Transformation Delay and Texture Memory Effect of Columnar Grained Cast Slab in Low Grades Non-oriented Electrical Steels

The cast slab of low grades non-oriented electrical steels experiences twice diffusional solid phase transformation and demonstrates the features of strong morphological memory referring to columnar structure and texture memory referring to the preferred texture at room temperature. In this paper, e...

Full description

Saved in:
Bibliographic Details
Published in:ISIJ International 2021/05/15, Vol.61(5), pp.1669-1678
Main Authors: Wu, Xiaolong, Gu, Chen, Yang, Ping, Gu, Xinfu, Pang, Shufang
Format: Article
Language:English
Subjects:
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
cited_by cdi_FETCH-LOGICAL-c587t-3f3fd8d13283525cfd990d75bda3b1ac4cf2cb6d9efa40ad84e40b04174498b13
cites cdi_FETCH-LOGICAL-c587t-3f3fd8d13283525cfd990d75bda3b1ac4cf2cb6d9efa40ad84e40b04174498b13
container_end_page 1678
container_issue 5
container_start_page 1669
container_title ISIJ International
container_volume 61
creator Wu, Xiaolong
Gu, Chen
Yang, Ping
Gu, Xinfu
Pang, Shufang
description The cast slab of low grades non-oriented electrical steels experiences twice diffusional solid phase transformation and demonstrates the features of strong morphological memory referring to columnar structure and texture memory referring to the preferred texture at room temperature. In this paper, electron backscatter diffraction (EBSD), quasi-insitu observation of heating samples, and dilatometry are used to study and analyze the two kinds of memory phenomena. The results show that the cast slab consists of about 70% coarse columnar grains and 30% small equiaxed grains. Many small equiaxed grains show Σ3 misorientations with columnar grains indicating K-S orientation relationship obeyed during phase transformation. Coarse columnar grains show a typical ||growing axis orientation which is the same as solidified columnar grains. The quasi-insitu observation shows that transformation of columnar grained ferrite to austenite is very sluggish and columnar grained ferrite can still be seen even at a superheating degree of 176°C for 1 hour. Dilatometry measurement indicates that the starting transformation temperatures for a columnar-grain-dominant sample and a small-equiaxed-grain-dominant sample are similar, whereas their transformation extents are quite different with columnar grained sample showing a low dilatational amount due to insufficient transformation. It is most likely that the coarse columnar grains in cast slab are retained and untransformed high temperature δ-ferrite are not subjected to twice complete transformations. These retaining columnar grains in low grades of electrical steels can be used to improve magnetic properties through optimizing processing parameters.
doi_str_mv 10.2355/isijinternational.ISIJINT-2020-623
format article
fullrecord <record><control><sourceid>jstage_cross</sourceid><recordid>TN_cdi_crossref_primary_10_2355_isijinternational_ISIJINT_2020_623</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>article_isijinternational_61_5_61_ISIJINT_2020_623_article_char_en</sourcerecordid><originalsourceid>FETCH-LOGICAL-c587t-3f3fd8d13283525cfd990d75bda3b1ac4cf2cb6d9efa40ad84e40b04174498b13</originalsourceid><addsrcrecordid>eNpt0MFuGyEQgGEUJVItN-_AudK6sIC9e0xdN3XkOgc7Um5oFoaECEMFWInfvnYS5dD2whzQfBr9hHzhbNIKpb764p98rJgjVJ8ihMlys7xZrrdNy1rWTFtxRkZcyFmj5JSdkxHruWq4Uv0nclmKHxhrZScFFyNy2GaIxaW8e7XodwxwoBAt3eJL3Wekv3CX8oEunENTaXJ0nsJ-FyHT6ww-oqVzKJVuAgzUR7pKz6cPi4WuU2xS9ng81dJFOK5nbyDQTUUM5TO5cBAKXr7PMbn7sdjOfzar2-vl_GrVGNXNaiOccLazXLSdUK0yzvY9szM1WBADByONa80wtT06kAxsJ1GygUk-k7LvBi7G5Nuba3IqJaPTv7PfQT5ozvSpp_6np37vqU899bHnEbl_Q55KhQf8ICBXbwL-h5hyrU7P39THinmErDGKP1nZk9E</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Transformation Delay and Texture Memory Effect of Columnar Grained Cast Slab in Low Grades Non-oriented Electrical Steels</title><source>Free Full-Text Journals in Chemistry</source><creator>Wu, Xiaolong ; Gu, Chen ; Yang, Ping ; Gu, Xinfu ; Pang, Shufang</creator><creatorcontrib>Wu, Xiaolong ; Gu, Chen ; Yang, Ping ; Gu, Xinfu ; Pang, Shufang</creatorcontrib><description>The cast slab of low grades non-oriented electrical steels experiences twice diffusional solid phase transformation and demonstrates the features of strong morphological memory referring to columnar structure and texture memory referring to the preferred texture at room temperature. In this paper, electron backscatter diffraction (EBSD), quasi-insitu observation of heating samples, and dilatometry are used to study and analyze the two kinds of memory phenomena. The results show that the cast slab consists of about 70% coarse columnar grains and 30% small equiaxed grains. Many small equiaxed grains show Σ3 misorientations with columnar grains indicating K-S orientation relationship obeyed during phase transformation. Coarse columnar grains show a typical ||growing axis orientation which is the same as solidified columnar grains. The quasi-insitu observation shows that transformation of columnar grained ferrite to austenite is very sluggish and columnar grained ferrite can still be seen even at a superheating degree of 176°C for 1 hour. Dilatometry measurement indicates that the starting transformation temperatures for a columnar-grain-dominant sample and a small-equiaxed-grain-dominant sample are similar, whereas their transformation extents are quite different with columnar grained sample showing a low dilatational amount due to insufficient transformation. It is most likely that the coarse columnar grains in cast slab are retained and untransformed high temperature δ-ferrite are not subjected to twice complete transformations. These retaining columnar grains in low grades of electrical steels can be used to improve magnetic properties through optimizing processing parameters.</description><identifier>ISSN: 0915-1559</identifier><identifier>EISSN: 1347-5460</identifier><identifier>DOI: 10.2355/isijinternational.ISIJINT-2020-623</identifier><language>eng</language><publisher>The Iron and Steel Institute of Japan</publisher><subject>columnar grain ; morphological memory ; phase transformation ; textural memory</subject><ispartof>ISIJ International, 2021/05/15, Vol.61(5), pp.1669-1678</ispartof><rights>2021 The Iron and Steel Institute of Japan.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c587t-3f3fd8d13283525cfd990d75bda3b1ac4cf2cb6d9efa40ad84e40b04174498b13</citedby><cites>FETCH-LOGICAL-c587t-3f3fd8d13283525cfd990d75bda3b1ac4cf2cb6d9efa40ad84e40b04174498b13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Wu, Xiaolong</creatorcontrib><creatorcontrib>Gu, Chen</creatorcontrib><creatorcontrib>Yang, Ping</creatorcontrib><creatorcontrib>Gu, Xinfu</creatorcontrib><creatorcontrib>Pang, Shufang</creatorcontrib><title>Transformation Delay and Texture Memory Effect of Columnar Grained Cast Slab in Low Grades Non-oriented Electrical Steels</title><title>ISIJ International</title><addtitle>ISIJ Int.</addtitle><description>The cast slab of low grades non-oriented electrical steels experiences twice diffusional solid phase transformation and demonstrates the features of strong morphological memory referring to columnar structure and texture memory referring to the preferred texture at room temperature. In this paper, electron backscatter diffraction (EBSD), quasi-insitu observation of heating samples, and dilatometry are used to study and analyze the two kinds of memory phenomena. The results show that the cast slab consists of about 70% coarse columnar grains and 30% small equiaxed grains. Many small equiaxed grains show Σ3 misorientations with columnar grains indicating K-S orientation relationship obeyed during phase transformation. Coarse columnar grains show a typical ||growing axis orientation which is the same as solidified columnar grains. The quasi-insitu observation shows that transformation of columnar grained ferrite to austenite is very sluggish and columnar grained ferrite can still be seen even at a superheating degree of 176°C for 1 hour. Dilatometry measurement indicates that the starting transformation temperatures for a columnar-grain-dominant sample and a small-equiaxed-grain-dominant sample are similar, whereas their transformation extents are quite different with columnar grained sample showing a low dilatational amount due to insufficient transformation. It is most likely that the coarse columnar grains in cast slab are retained and untransformed high temperature δ-ferrite are not subjected to twice complete transformations. These retaining columnar grains in low grades of electrical steels can be used to improve magnetic properties through optimizing processing parameters.</description><subject>columnar grain</subject><subject>morphological memory</subject><subject>phase transformation</subject><subject>textural memory</subject><issn>0915-1559</issn><issn>1347-5460</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNpt0MFuGyEQgGEUJVItN-_AudK6sIC9e0xdN3XkOgc7Um5oFoaECEMFWInfvnYS5dD2whzQfBr9hHzhbNIKpb764p98rJgjVJ8ihMlys7xZrrdNy1rWTFtxRkZcyFmj5JSdkxHruWq4Uv0nclmKHxhrZScFFyNy2GaIxaW8e7XodwxwoBAt3eJL3Wekv3CX8oEunENTaXJ0nsJ-FyHT6ww-oqVzKJVuAgzUR7pKz6cPi4WuU2xS9ng81dJFOK5nbyDQTUUM5TO5cBAKXr7PMbn7sdjOfzar2-vl_GrVGNXNaiOccLazXLSdUK0yzvY9szM1WBADByONa80wtT06kAxsJ1GygUk-k7LvBi7G5Nuba3IqJaPTv7PfQT5ozvSpp_6np37vqU899bHnEbl_Q55KhQf8ICBXbwL-h5hyrU7P39THinmErDGKP1nZk9E</recordid><startdate>20210515</startdate><enddate>20210515</enddate><creator>Wu, Xiaolong</creator><creator>Gu, Chen</creator><creator>Yang, Ping</creator><creator>Gu, Xinfu</creator><creator>Pang, Shufang</creator><general>The Iron and Steel Institute of Japan</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20210515</creationdate><title>Transformation Delay and Texture Memory Effect of Columnar Grained Cast Slab in Low Grades Non-oriented Electrical Steels</title><author>Wu, Xiaolong ; Gu, Chen ; Yang, Ping ; Gu, Xinfu ; Pang, Shufang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c587t-3f3fd8d13283525cfd990d75bda3b1ac4cf2cb6d9efa40ad84e40b04174498b13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>columnar grain</topic><topic>morphological memory</topic><topic>phase transformation</topic><topic>textural memory</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wu, Xiaolong</creatorcontrib><creatorcontrib>Gu, Chen</creatorcontrib><creatorcontrib>Yang, Ping</creatorcontrib><creatorcontrib>Gu, Xinfu</creatorcontrib><creatorcontrib>Pang, Shufang</creatorcontrib><collection>CrossRef</collection><jtitle>ISIJ International</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wu, Xiaolong</au><au>Gu, Chen</au><au>Yang, Ping</au><au>Gu, Xinfu</au><au>Pang, Shufang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Transformation Delay and Texture Memory Effect of Columnar Grained Cast Slab in Low Grades Non-oriented Electrical Steels</atitle><jtitle>ISIJ International</jtitle><addtitle>ISIJ Int.</addtitle><date>2021-05-15</date><risdate>2021</risdate><volume>61</volume><issue>5</issue><spage>1669</spage><epage>1678</epage><pages>1669-1678</pages><issn>0915-1559</issn><eissn>1347-5460</eissn><abstract>The cast slab of low grades non-oriented electrical steels experiences twice diffusional solid phase transformation and demonstrates the features of strong morphological memory referring to columnar structure and texture memory referring to the preferred texture at room temperature. In this paper, electron backscatter diffraction (EBSD), quasi-insitu observation of heating samples, and dilatometry are used to study and analyze the two kinds of memory phenomena. The results show that the cast slab consists of about 70% coarse columnar grains and 30% small equiaxed grains. Many small equiaxed grains show Σ3 misorientations with columnar grains indicating K-S orientation relationship obeyed during phase transformation. Coarse columnar grains show a typical ||growing axis orientation which is the same as solidified columnar grains. The quasi-insitu observation shows that transformation of columnar grained ferrite to austenite is very sluggish and columnar grained ferrite can still be seen even at a superheating degree of 176°C for 1 hour. Dilatometry measurement indicates that the starting transformation temperatures for a columnar-grain-dominant sample and a small-equiaxed-grain-dominant sample are similar, whereas their transformation extents are quite different with columnar grained sample showing a low dilatational amount due to insufficient transformation. It is most likely that the coarse columnar grains in cast slab are retained and untransformed high temperature δ-ferrite are not subjected to twice complete transformations. These retaining columnar grains in low grades of electrical steels can be used to improve magnetic properties through optimizing processing parameters.</abstract><pub>The Iron and Steel Institute of Japan</pub><doi>10.2355/isijinternational.ISIJINT-2020-623</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 0915-1559
ispartof ISIJ International, 2021/05/15, Vol.61(5), pp.1669-1678
issn 0915-1559
1347-5460
language eng
recordid cdi_crossref_primary_10_2355_isijinternational_ISIJINT_2020_623
source Free Full-Text Journals in Chemistry
subjects columnar grain
morphological memory
phase transformation
textural memory
title Transformation Delay and Texture Memory Effect of Columnar Grained Cast Slab in Low Grades Non-oriented Electrical Steels
url http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-04T06%3A50%3A51IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-jstage_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Transformation%20Delay%20and%20Texture%20Memory%20Effect%20of%20Columnar%20Grained%20Cast%20Slab%20in%20Low%20Grades%20Non-oriented%20Electrical%20Steels&rft.jtitle=ISIJ%20International&rft.au=Wu,%20Xiaolong&rft.date=2021-05-15&rft.volume=61&rft.issue=5&rft.spage=1669&rft.epage=1678&rft.pages=1669-1678&rft.issn=0915-1559&rft.eissn=1347-5460&rft_id=info:doi/10.2355/isijinternational.ISIJINT-2020-623&rft_dat=%3Cjstage_cross%3Earticle_isijinternational_61_5_61_ISIJINT_2020_623_article_char_en%3C/jstage_cross%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-c587t-3f3fd8d13283525cfd990d75bda3b1ac4cf2cb6d9efa40ad84e40b04174498b13%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true