Journal of The Japan Institute of Metals最新文献_第6页

Factors Influencing Deformation Behavior and Electrical Conductivity of Pure Copper Castings Fabricated by Industrial Process 影响工业纯铜铸件变形行为和电导率的因素

4区材料科学

Journal of The Japan Institute of Metals Pub Date : 2017-01-01 DOI: 10.2320/JINSTMET.J2016052

I. Goto, S. Aso, K. Ohguchi, Hayato Oguri, K. Kurosawa, Hiroyuki Y. Suzuki, H. Hayashi, J. Shionoya

{"title":"Factors Influencing Deformation Behavior and Electrical Conductivity of Pure Copper Castings Fabricated by Industrial Process","authors":"I. Goto, S. Aso, K. Ohguchi, Hayato Oguri, K. Kurosawa, Hiroyuki Y. Suzuki, H. Hayashi, J. Shionoya","doi":"10.2320/JINSTMET.J2016052","DOIUrl":"https://doi.org/10.2320/JINSTMET.J2016052","url":null,"abstract":"The factors inﬂuencing the tensile deformation behavior and the electrical conductivity of pure copper castings fabricated by an industrial process were investigated. The pure copper castings had sufﬁcient deformation characteristics and electrical conductiv ity on the practical side. However, the deformation characteristics and the electrical conductivity of the castings were slightly inferior to those of the castings fabricated by laboratory experiments. The oxygen content in the castings fabricated by the industrial process was less than 0 . 01 mass ％ , which resulted in the absence of Cu ︲ Cu 2 O eutectic phase that exhibits the brittle behavior. On the other hand, observations of the fracture surface and the cross ︲ section of the castings showed the existences of microporosity and two types of inclusions. These may be the factors influencing the decrease in the both tensile strength and uniform elongation. The microporosity were suggested to be caused by higher hydrogen content in the melt and / or by slower cooling rate during solidiﬁca -tion. EDX analyses suggested that the inclusions are a kind of slag and straw ashes. Furthermore, phosphorus and iron content in the castings fabricated by the industrial process were higher than those in the castings fabricated by the laboratory experiments. These may be the factors inﬂuencing the decrease in electrical conductivity. The above ﬁndings indicated the several methods to improve the properties of the castings fabricated by the industrial process. ［ doi:10 . 2320 / jinstmet.J2016052 ］","PeriodicalId":17337,"journal":{"name":"Journal of The Japan Institute of Metals","volume":"9 1","pages":"133-142"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75942944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Development of Room Temperature Formability of Rolled Magnesium Alloy Sheets by Texture Control 织构控制轧制镁合金板材室温成形性能的研究

4区材料科学

Journal of The Japan Institute of Metals Pub Date : 2017-01-01 DOI: 10.2320/JINSTMET.J2016059

Y. Chino, Xinsheng Huang, Kazutaka Suzuki

引用次数: 5

Influence of Zn Addition on the Solid/Liquid Interfacial Energy in Sn-Ag Alloy 添加Zn对Sn-Ag合金固/液界面能的影响

4区材料科学

Journal of The Japan Institute of Metals Pub Date : 2017-01-01 DOI: 10.2320/JINSTMET.J2016048

R. Yoshimura, H. Esaka, K. Shinozuka

引用次数: 1

Electronic Structure and Thermoelectric Properties of Pseudogap Intermetallic Compound Al 5 Co 2 赝隙金属间化合物al5co2的电子结构和热电性能

4区材料科学

Journal of The Japan Institute of Metals Pub Date : 2017-01-01 DOI: 10.2320/JINSTMET.J2016053

Masaya Kumagai, K. Kurosaki, Y. Ohishi, H. Muta, S. Yamanaka

引用次数: 0

Chlorine Leaching of Nickel and Cobalt Mixed Sulfide using Iron Chloride Solution 用氯化铁溶液氯浸出镍钴混合硫化物

4区材料科学

Journal of The Japan Institute of Metals Pub Date : 2017-01-01 DOI: 10.2320/JINSTMET.J2016065

Hiroshi Kobayashi, Hirofumi Shoji, S. Asano, Masaki Imamura

{"title":"Chlorine Leaching of Nickel and Cobalt Mixed Sulfide using Iron Chloride Solution","authors":"Hiroshi Kobayashi, Hirofumi Shoji, S. Asano, Masaki Imamura","doi":"10.2320/JINSTMET.J2016065","DOIUrl":"https://doi.org/10.2320/JINSTMET.J2016065","url":null,"abstract":"The matte chlorine leach and electro ︲ winning （ MCLE ） process, developed by Sumitomo Metal Mining Co., Ltd. （ SMM ） is well known as a unique commercial nickel reﬁning process with a high nickel recovery ratio. SMM has gradually increased the ratio of mixed sulfide （ MS: mixture of nickel and cobalt sulfides ） that can be used as a raw material in the MCLE process over the past decade. However, the reactivity of MS in chlorine leaching remains insufﬁcient and further improvements are needed. We performed bench scale chlorine leaching tests with iron chloride, instead of the currently used copper chloride, as an oxi - dant medium for chlorine gas. However the reactivity of MS was not improved despite the higher oxidation ︲ reduction potential （ ORP ） of iron chloride than that of copper chloride. Though stability studies of iron chloride complexes based on an E ︲ pCl （ poten - tial, ︲ log a Cl ︲） diagram, the chlorine leaching potential that is suitable for copper chloride was found to be too low for iron chloride. Reactivity of MS was improved at a higher leaching potentials; however this did not represent a signiﬁcant improvement over copper chloride based methods. We elucidated the reaction mechanism and showed that chlorine leaching with iron chloride is not suitable for industrial application to MS. ［ doi:10 . 2320 / jinstmet.J2016065 ］","PeriodicalId":17337,"journal":{"name":"Journal of The Japan Institute of Metals","volume":"73 1","pages":"282-287"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86016079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

マイクロマグネティクス計算によるNd-Fe-B磁石磁化反転過程の解析利用微磁控计算分析钕铁硼磁体磁化反转过程

4区材料科学

Journal of The Japan Institute of Metals Pub Date : 2017-01-01 DOI: 10.2320/JINSTMET.JA201602

忠勝大久保, H. Sepehri-Amin, 和博宝野

引用次数: 1

Growth Process of ω-precipitates in a Ti-20 mass% Mo Alloy Ti-20质量% Mo合金中ω-相的生长过程

4区材料科学

Journal of The Japan Institute of Metals Pub Date : 2017-01-01 DOI: 10.2320/jinstmet.j2016049

Y. Shimogami, T. Oyama, C. Watanabe, R. Monzen

引用次数: 0

Production techniques of coin-type medal rewarding contributions manufacturing in the Momoyama -era 桃山时代硬币型奖状制造技术

4区材料科学

Journal of The Japan Institute of Metals Pub Date : 2017-01-01 DOI: 10.2320/JINSTMET.J2016050

F. Kirino, Naoshi Ohono, Satoko Taguchi, Akimitsu Nezu, R. Yokoyama

{"title":"Production techniques of coin-type medal rewarding contributions manufacturing in the Momoyama -era","authors":"F. Kirino, Naoshi Ohono, Satoko Taguchi, Akimitsu Nezu, R. Yokoyama","doi":"10.2320/JINSTMET.J2016050","DOIUrl":"https://doi.org/10.2320/JINSTMET.J2016050","url":null,"abstract":"Metal craft production techniques for coin ︲ type medal rewarding contributions manufactured in the Momoyama ︲ era were studied. Reward samples are separated into two types on the basis of production process. One process is casting, and the other is forging. An example of the composition of a casting sample is Ag ︲ Cu alloy, and that of a forged sample is pure Ag. Many voids in cast cultural properties, called eirakutsuho , are observed using X ︲ ray transmission imaging techniques, and indicate the production technique used during this era. Inner stress is measured by the sin 2 ψ method for identifying X ︲ ray diffraction pattern changes. The inner stress of eirakutsuho manufactured by casting is compressive. This is a solidification contraction that occurs at the time of casting. The metal morphology of cast cultural properties, such as eirakutsuho is of the branch type. A thermal ﬂaw is manufactured at the surface of such a cultural property. A creased metal morphology is formed in production by the forging method. Eirakutsuho manufactured by the forging method is stress free. This result indicates that thermal treatment is used in this manufacture process. pure Ag is easy to process for forging. Test samples of cultural properties have been found to have been manufactured by forging methods. It is assumed that the jyotagane metal craft technique was used. The inner stress manufactured in this sample prepared by this method is compressive. After annealing, this sample becomes stress free. The result matches the results obtained by mea - suring the inner stress of cultural properties. ［ doi:10 . 2320 / jinstmet.J2016050 ］（ Received 5, 20, 2017 ）","PeriodicalId":17337,"journal":{"name":"Journal of The Japan Institute of Metals","volume":"36 1","pages":"101-108"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84651346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Magnetic Anisotropy Around Grain-Boundaries in Rare-Earth Magnets and Their Coercivity 稀土磁体晶界磁各向异性及其矫顽力

4区材料科学

Journal of The Japan Institute of Metals Pub Date : 2017-01-01 DOI: 10.2320/JINSTMET.JA201604

T. Yoshioka, H. Tsuchiura

引用次数: 0

Formation of a TiAl 3 Layer by an AIH-FPP Treatment Using Mechanically Milled Particles and Its Wear Resistance 机械磨粒AIH-FPP处理tial3层的形成及其耐磨性

4区材料科学

Journal of The Japan Institute of Metals Pub Date : 2017-01-01 DOI: 10.2320/JINSTMET.J2016063

S. Saito, Shogo Takesue, J. Komotori, Kengo Fukazawa, Y. Misaka

引用次数: 1