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Microstructure of Ni3Al ingots containing boron 含硼Ni3Al铸锭的显微组织
Metallography Pub Date : 1988-05-01 DOI: 10.1016/0026-0800(88)90017-1
V. Zinoviev , E.M. Schulson, I. Baker
{"title":"Microstructure of Ni3Al ingots containing boron","authors":"V. Zinoviev ,&nbsp;E.M. Schulson,&nbsp;I. Baker","doi":"10.1016/0026-0800(88)90017-1","DOIUrl":"10.1016/0026-0800(88)90017-1","url":null,"abstract":"<div><p>The microstructures of nominally stoichiometric ingots of Ni<sub>3</sub>Al with boron contents up to 1.12 at.% were examined in the as-received and in the homogenized states. A second phase was observed in the ingot containing 1.12 at.% boron. The effect of homogenization on this phase is described.</p></div>","PeriodicalId":100918,"journal":{"name":"Metallography","volume":"21 2","pages":"Pages 207-215"},"PeriodicalIF":0.0,"publicationDate":"1988-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0026-0800(88)90017-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88830371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Toughness and fractography of austenitic type 304 stainless steel with sensitization treatments at 973 K 973K敏化处理奥氏体304不锈钢的韧性和断口形貌
Metallography Pub Date : 1988-05-01 DOI: 10.1016/0026-0800(88)90013-4
O.A. Hilders , M.G. Santana
{"title":"Toughness and fractography of austenitic type 304 stainless steel with sensitization treatments at 973 K","authors":"O.A. Hilders ,&nbsp;M.G. Santana","doi":"10.1016/0026-0800(88)90013-4","DOIUrl":"https://doi.org/10.1016/0026-0800(88)90013-4","url":null,"abstract":"<div><p>It is shown that the fracture toughness in type 304 austenitic stainless steel can be obtained from convenient measurements of the dimple size at the bottom of the cup portion in the fracture surface of round tension samples, employing SEM techniques and quantitative fractography. K<sub>IC</sub> measurements were performed for sensitized samples after heating for 1, 12, 24, and 48 h at 973 K. Fracture toughness is shown to decrease monotonically with increasing time of heat treatment. Two models based on axial stress conditions, Krafft's model and a model proposed by Schwalbe and Backfisch, were tested and compared with Barsom and Pellegrino's model, which reflects closely the necessary plane strain conditions for K<sub>IC</sub> measurements. The crack growth increment was considered equal to the dimple size, which was measured by means of the mean intercept length of three dimensional bodies or mean chord in space, <em>L</em><sub>3</sub>.</p></div>","PeriodicalId":100918,"journal":{"name":"Metallography","volume":"21 2","pages":"Pages 151-164"},"PeriodicalIF":0.0,"publicationDate":"1988-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0026-0800(88)90013-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72282548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 27
Microstructural development in a duplex FeAl10Mn29C0.4 alloy FeAl10Mn29C0.4双相合金的显微组织发展
Metallography Pub Date : 1988-05-01 DOI: 10.1016/0026-0800(88)90016-X
S. Tjong, N. Ho
{"title":"Microstructural development in a duplex FeAl10Mn29C0.4 alloy","authors":"S. Tjong, N. Ho","doi":"10.1016/0026-0800(88)90016-X","DOIUrl":"https://doi.org/10.1016/0026-0800(88)90016-X","url":null,"abstract":"","PeriodicalId":100918,"journal":{"name":"Metallography","volume":"357 1","pages":"199-206"},"PeriodicalIF":0.0,"publicationDate":"1988-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76400225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Improved metallographic preparation of IN-657 alloy by high temperature oxidation 改进IN-657合金的高温氧化金相制备工艺
Metallography Pub Date : 1988-05-01 DOI: 10.1016/0026-0800(88)90018-3
E. Otero, M. Merino, A. Pardo, M. Biezma
{"title":"Improved metallographic preparation of IN-657 alloy by high temperature oxidation","authors":"E. Otero, M. Merino, A. Pardo, M. Biezma","doi":"10.1016/0026-0800(88)90018-3","DOIUrl":"https://doi.org/10.1016/0026-0800(88)90018-3","url":null,"abstract":"","PeriodicalId":100918,"journal":{"name":"Metallography","volume":"39 1","pages":"217-225"},"PeriodicalIF":0.0,"publicationDate":"1988-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76998695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Metallography of a melt-quenched aluminum-cobalt alloy☆ 一种熔体淬火铝钴合金的金相学☆
Metallography Pub Date : 1988-05-01 DOI: 10.1016/0026-0800(88)90015-8
J. Menon, C. Suryanarayana
{"title":"Metallography of a melt-quenched aluminum-cobalt alloy☆","authors":"J. Menon, C. Suryanarayana","doi":"10.1016/0026-0800(88)90015-8","DOIUrl":"https://doi.org/10.1016/0026-0800(88)90015-8","url":null,"abstract":"","PeriodicalId":100918,"journal":{"name":"Metallography","volume":"07 1","pages":"179-197"},"PeriodicalIF":0.0,"publicationDate":"1988-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88974378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Simple on-line method for finding low-index zone axes in TEM 瞬变电磁法低折射率带轴的简单在线查找方法
Metallography Pub Date : 1988-05-01 DOI: 10.1016/0026-0800(88)90019-5
W. Prantl
{"title":"Simple on-line method for finding low-index zone axes in TEM","authors":"W. Prantl","doi":"10.1016/0026-0800(88)90019-5","DOIUrl":"https://doi.org/10.1016/0026-0800(88)90019-5","url":null,"abstract":"","PeriodicalId":100918,"journal":{"name":"Metallography","volume":"67 4 1","pages":"227-232"},"PeriodicalIF":0.0,"publicationDate":"1988-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75942056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Improved metallographic preparation of IN-657 alloy by high temperature oxidation IN-657合金高温氧化金相制备工艺的改进
Metallography Pub Date : 1988-05-01 DOI: 10.1016/0026-0800(88)90018-3
E. Otero, M.C. Merino, A. Pardo , M.V. Biezma
{"title":"Improved metallographic preparation of IN-657 alloy by high temperature oxidation","authors":"E. Otero,&nbsp;M.C. Merino,&nbsp;A. Pardo ,&nbsp;M.V. Biezma","doi":"10.1016/0026-0800(88)90018-3","DOIUrl":"https://doi.org/10.1016/0026-0800(88)90018-3","url":null,"abstract":"<div><p>In this paper, the limitations of conventional reagents for the metallographic preparation of nickel-based alloys and, in particular, of the IN-657 alloy, which is the object of this study, are revealed. A reproducible method has been developed for the metallographic preparation of IN-657, using electropolishing with diluted H<sub>2</sub>SO<sub>4</sub> and high temperature controlled oxidation.</p></div>","PeriodicalId":100918,"journal":{"name":"Metallography","volume":"21 2","pages":"Pages 217-225"},"PeriodicalIF":0.0,"publicationDate":"1988-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0026-0800(88)90018-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72237477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Microstructural development in a duplex FeAl10Mn29C0.4 alloy FeAl10Mn29C0.4双相合金显微组织的发展
Metallography Pub Date : 1988-05-01 DOI: 10.1016/0026-0800(88)90016-X
S.C. Tjong, N.J. Ho
{"title":"Microstructural development in a duplex FeAl10Mn29C0.4 alloy","authors":"S.C. Tjong,&nbsp;N.J. Ho","doi":"10.1016/0026-0800(88)90016-X","DOIUrl":"https://doi.org/10.1016/0026-0800(88)90016-X","url":null,"abstract":"<div><p>A new duplex-phase FeAl<sub>10</sub>Mn<sub>29</sub>C<sub>0.4</sub> stainless steel alloy has been developed as a substitute for the conventional duplex Fe-Ni-Cr stainless steels. The microstructure of this new alloy after aging heat treatment at 710°C was investigated by means of the x-ray diffraction and electron microscopic techniques. It was found that aging the duplex alloy at 710°C for 1 hr could lead to the precipitation of κ-phase carbides within the austenitic grains. Consequently, a brittle β-manganese phase also appeared in this alloy after 1 hr aging.</p></div>","PeriodicalId":100918,"journal":{"name":"Metallography","volume":"21 2","pages":"Pages 199-206"},"PeriodicalIF":0.0,"publicationDate":"1988-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0026-0800(88)90016-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72246715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Simple technique for revealing prior austenite grain boundaries in CrMoV turbine rotor steels 揭示CrMoV涡轮转子钢中先前奥氏体晶界的简单技术
Metallography Pub Date : 1988-05-01 DOI: 10.1016/0026-0800(88)90020-1
A. ul Haq, F.H. Hashmi, A.Q. Khan
{"title":"Simple technique for revealing prior austenite grain boundaries in CrMoV turbine rotor steels","authors":"A. ul Haq,&nbsp;F.H. Hashmi,&nbsp;A.Q. Khan","doi":"10.1016/0026-0800(88)90020-1","DOIUrl":"https://doi.org/10.1016/0026-0800(88)90020-1","url":null,"abstract":"","PeriodicalId":100918,"journal":{"name":"Metallography","volume":"21 2","pages":"Pages 233-235"},"PeriodicalIF":0.0,"publicationDate":"1988-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0026-0800(88)90020-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72282546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Metallography of copper-tin alloys 铜锡合金的金相学
Metallography Pub Date : 1988-05-01 DOI: 10.1016/0026-0800(88)90012-2
Narendra N. Acharya, P.G. Mukunda
{"title":"Metallography of copper-tin alloys","authors":"Narendra N. Acharya,&nbsp;P.G. Mukunda","doi":"10.1016/0026-0800(88)90012-2","DOIUrl":"https://doi.org/10.1016/0026-0800(88)90012-2","url":null,"abstract":"<div><p>When powder metallurgical compacts, made from mixtures of elemental copper and tin powders, are heated from room temperature to the sintering temperature, they undergo various metallographic changes, often with several Cu-Sn phases occurring simultaneously in the structure. In order to make a comprehensive analysis of the sintering behavior, it was essential to ascertain how these phases form in the microstructure. A detailed study of the effect of different heat treatments was therefore conducted.</p></div>","PeriodicalId":100918,"journal":{"name":"Metallography","volume":"21 2","pages":"Pages 137-150"},"PeriodicalIF":0.0,"publicationDate":"1988-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0026-0800(88)90012-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72246716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
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