Acta Metallurgica et Materialia最新文献

An all-optical wavelength converter in a layer-stack suitable for compact photonic integration 一种适用于紧凑光子集成的层堆叠全光波长转换器

Acta Metallurgica et Materialia Pub Date : 2002-07-17 DOI: 10.1364/IPR.2002.IWC2

R. Broeke, J. Binsma, M. Geemertvan, F. Heinrichsdorff, T. Dongenvan, Zantvoort van Jhc, E. Tangdiongga, H. Waardtde, X. Leijtens, Y. Oei, M. Smit

引用次数: 2

In situtem observations of nucleation and bluntness of nanocracks in thin crystals of 310 stainless steel 310不锈钢薄晶中纳米裂纹形核和钝性的现场观察

Acta Metallurgica et Materialia Pub Date : 1995-12-01 DOI: 10.1016/0956-7151(95)00122-C

Q.-Z. Chen, W.-Y. Chu, Y.-B. Wang, C.-M. Hsiao

引用次数: 52

In situstudy of the self-accommodating process during the martensitic transformation of a Cu-Zn-Al single crystal by synchrotron X-Ray topography—I. crystallographic study 同步x射线形貌对Cu-Zn-Al单晶马氏体相变自适应过程的研究。晶体的研究

Acta Metallurgica et Materialia Pub Date : 1995-12-01 DOI: 10.1016/0956-7151(95)00126-G

C. Jourdan , J. Gastaldi , V. Roques , G. Grange , S. Belkahla , G. Guénin

引用次数: 6

Compression-compression fatigue of 3D woven composites 三维机织复合材料的压缩-压缩疲劳

Acta Metallurgica et Materialia Pub Date : 1995-12-01 DOI: 10.1016/0956-7151(95)00137-K

M.S. Dadkhah, B.N. Cox, W.L. Morris

引用次数: 67

Viscous behavior of interfaces in fluorine-doped si3n4/sic composites 掺氟si3n4/sic复合材料界面粘性行为

Acta Metallurgica et Materialia Pub Date : 1995-12-01 DOI: 10.1016/0956-7151(95)00129-J

G. Pezzotti , K. Ota , H.-J. Kleebe , Y. Okamoto , T. Nishida

{"title":"Viscous behavior of interfaces in fluorine-doped si3n4/sic composites","authors":"G. Pezzotti , K. Ota , H.-J. Kleebe , Y. Okamoto , T. Nishida","doi":"10.1016/0956-7151(95)00129-J","DOIUrl":"10.1016/0956-7151(95)00129-J","url":null,"abstract":"<div><p>The influence of fluorine addition on the grain/phase boundary structures and their viscous behavior at high temperature were systematically investigated in Si<sub>3</sub>N<sub>4</sub>/SiC composites. As a reference, a simple system densified by hot isostatic pressing (HIP) and containing only SiO<sub>2</sub>at the boundaries was selected for this basic investigation. In addition, increasing amounts of F dopant were incorporated into the composite bodies by adding Teflon during the mixing procedure of the raw powders and then pre-firing the mixture under high vacuum at 1200°C. Analytical transmission electron microscopy showed that fluorine remained localized at the grain boundary films and triple points, constituting an amount up to a few percent by weight of the intergranular glassy-SiO<sub>2</sub>phase. Detailed structural characterizations of both grain and phase boundaries were performed by using high-resolution electron microscopy (HREM) and atomic force microscopy (AFM). The high-temperature mechanical behavior of the undoped and F-doped SiO<sub>2</sub>phases was characterized by both measurements of torsional creep rate and variation of internal friction at temperatures up to 1600°C. F-doped materials showed creep rates several orders of magnitude higher compared to the undoped sample and damping temperature curves markedly shifted to lower temperature values. According to the above set of microstructural and mechanical data, the inherent viscosity of the SiO<sub>2</sub>intergranular phase could be quantitatively evaluated and the viscous-sliding mechanism under stress modeled.</p></div>","PeriodicalId":100018,"journal":{"name":"Acta Metallurgica et Materialia","volume":"43 12","pages":"Pages 4357-4370"},"PeriodicalIF":0.0,"publicationDate":"1995-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-7151(95)00129-J","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83878010","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: 20

Boundary in γ″ precipitates in inconel 718 nickel-base superalloy inconel 718镍基高温合金中γ″晶界析出

Acta Metallurgica et Materialia Pub Date : 1995-12-01 DOI: 10.1016/0956-7151(95)00124-E

Jianhong He , X.Y. Tang , S. Fukuyama , K. Yokogawa

引用次数: 17

Internal friction in nb-v-o alloys nb-v-o合金的内摩擦

Acta Metallurgica et Materialia Pub Date : 1995-12-01 DOI: 10.1016/0956-7151(95)00120-K

N.P. Kushnareva, S.E. Snejko, I.P. Yarosh

引用次数: 11

A microscopic examination of the precipitation phenomena occuring during the isothermal pearlitic transformation in high carbon-copper nickel steels 高碳铜镍钢等温珠光体转变过程中析出现象的显微观察

Acta Metallurgica et Materialia Pub Date : 1995-12-01 DOI: 10.1016/0956-7151(95)00118-F

G. Fourlaris , A.J. Baker , G.D. Papademitriou

{"title":"A microscopic examination of the precipitation phenomena occuring during the isothermal pearlitic transformation in high carbon-copper nickel steels","authors":"G. Fourlaris , A.J. Baker , G.D. Papademitriou","doi":"10.1016/0956-7151(95)00118-F","DOIUrl":"10.1016/0956-7151(95)00118-F","url":null,"abstract":"<div><p>During isothermal pearlitic transformation of high carbon austenite, the formation of proeutectoid phases precedes that of pearlite. Widmanstatten cementite is the major proeutectoid phase that forms at all temperatures. Within this constituent the precipitation of ε-Cu always occurs, together with the formation of stabilized coarse austenite entrapments. Within pearlitic cementite interphase precipitation of ε-Cu occurs at all transformation temperatures, while within pearlitic ferrite a banded interphase precipitation of ε-Cu occurs only at temperatures close to the eutectoid point. As the temperature of the isothermal pearlitic transformation is lowered the formation of non-partitioned pearlitic ferrite is possible and ε-Cu precipitation only forms within this ferrite as a result of ageing occurring during prolonged isothermal holding. It was concluded that interphase precipitation of ε-Cu always occurred on the migrating austenite/cementite interphase boundaries, but ε-Cu interphase precipitation occurred on the migrating austenite/ferrite boundaries only at temperatures close to the eutectoid point.</p></div>","PeriodicalId":100018,"journal":{"name":"Acta Metallurgica et Materialia","volume":"43 12","pages":"Pages 4421-4438"},"PeriodicalIF":0.0,"publicationDate":"1995-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-7151(95)00118-F","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85256693","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: 6

The mechanical behavior of an alumina carbon/epoxy laminate 氧化铝碳/环氧层压板的力学性能

Acta Metallurgica et Materialia Pub Date : 1995-12-01 DOI: 10.1016/0956-7151(95)00136-J

Dov Sherman , Jean Lemaitre , Frederick A. Leckie

引用次数: 11

Internal stresses in planar random fibre aluminium composites—II. mean stress hardening and relaxation 平面无规纤维铝复合材料的内应力ⅱ。平均应力硬化和松弛

Acta Metallurgica et Materialia Pub Date : 1995-12-01 DOI: 10.1016/0956-7151(95)00117-E

B. Johannesson, S.L. Ogin

引用次数: 3