发布求助
文献互助 智能选刊 最新文献

Metal Science Journal最新文献

筛选
英文 中文
The Segregation and Effects of Boron in an Austenitic Stainless Steel 硼在奥氏体不锈钢中的偏析及影响
Metal Science Journal Pub Date : 1900-01-01 DOI: 10.1179/030634572790446037
T. Williams
{"title":"The Segregation and Effects of Boron in an Austenitic Stainless Steel","authors":"T. Williams","doi":"10.1179/030634572790446037","DOIUrl":"https://doi.org/10.1179/030634572790446037","url":null,"abstract":"AbstractThe boron autoradiography techniques, using optical and electron microscopy, developed at the Atomic Energy Research Establishment, Harwell, have been described in some detail in two publications by Hughes et al. The present paper illustrates the usefulness of the techniques in the study of the effects of boron on the properties of Type-316 stainless steel.","PeriodicalId":103313,"journal":{"name":"Metal Science Journal","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123388784","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: 14
The Stacking-Fault Energy of Some Nickel-Cobalt Alloys 某些镍钴合金的叠错能
Metal Science Journal Pub Date : 1900-01-01 DOI: 10.1179/030634568790443468
B. Beeston, I. Dillamore, R. Smallman
{"title":"The Stacking-Fault Energy of Some Nickel-Cobalt Alloys","authors":"B. Beeston, I. Dillamore, R. Smallman","doi":"10.1179/030634568790443468","DOIUrl":"https://doi.org/10.1179/030634568790443468","url":null,"abstract":"AbstractStacking-fault energy measurements on nickel-cobalt alloys, obtained by three different methods, have been compared. The combined results from the node and empirical texture methods differ from those obtained by the tetrahedron method, which are consistently lower though showing the same form of variation with composition. The discrepancy is critically discussed and a probable value of 240 ± 50 ergs/cm2 obtained for the stacking-fault energy of nickel.","PeriodicalId":103313,"journal":{"name":"Metal Science Journal","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124953195","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: 76
On the High-Temperature Relaxation Peak in F.C.C. Metals 氟化金属的高温弛豫峰
Metal Science Journal Pub Date : 1900-01-01 DOI: 10.1179/MSC.1969.3.1.97
J. T. Roberts, P. Barrand
{"title":"On the High-Temperature Relaxation Peak in F.C.C. Metals","authors":"J. T. Roberts, P. Barrand","doi":"10.1179/MSC.1969.3.1.97","DOIUrl":"https://doi.org/10.1179/MSC.1969.3.1.97","url":null,"abstract":"AbstractA high-temperature relaxation peak (H.T.P.) has been observed at T(°K) ≥ 0·5 Tm in the damping spectra of pure silver and pure copper, in large-grained wire specimens. The relaxation strength of the peak in copper was ∼ 8 times larger than that for silver, though the incidence of “bamboo” grain boundaries was comparable. The occurrence of the peak was associated with the development of a “bamboo” grain structure and was attributed to the reversible shear or glide of boundaries at high temperatures, coupled with the movement of boundary jogs. Trace impurities rapidly suppressed the peak, this phenomenon being explained in terms of the impurity atoms poisoning the jogs and inhibiting their movement.","PeriodicalId":103313,"journal":{"name":"Metal Science Journal","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125068318","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: 5
T 1 (Al2CuLi) Precipitation in Aluminium–Copper–Lithium Alloys 铝-铜-锂合金中t1 (Al2CuLi)的析出
Metal Science Journal Pub Date : 1900-01-01 DOI: 10.1179/030634572790445975
B. Noble, G. Thompson
{"title":"T 1 (Al2CuLi) Precipitation in Aluminium–Copper–Lithium Alloys","authors":"B. Noble, G. Thompson","doi":"10.1179/030634572790445975","DOIUrl":"https://doi.org/10.1179/030634572790445975","url":null,"abstract":"Abstract T 1 precipitation has been studied by electron microscopy in aluminium alloys containing (wt.-%) Cu 3.5, Li 1.5 and Cu 2.5, Li 2.0. The T 1 phase forms as extremely thin hexagonal-shaped plates with a {111} habit plane and, depending on the degree of super-saturation, nucleates either at GP zones or at dissociated dislocations by a stacking-fault mechanism. The precipitate is bounded by 1/6 Shockley partial dislocations and growth of the phase occurs by separation of these partial dislocations.","PeriodicalId":103313,"journal":{"name":"Metal Science Journal","volume":"175 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123839740","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: 132
The Influence of γ Precipitation upon the Creep of γ′ (Ni3 (Al, Ti)) Single Crystals γ沉淀对γ′(Ni3 (Al, Ti))单晶蠕变的影响
Metal Science Journal Pub Date : 1900-01-01 DOI: 10.1179/030634572790446118
R. Ham, R. H. Cook, G. Purdy, G. Willoughby
{"title":"The Influence of γ Precipitation upon the Creep of γ′ (Ni3 (Al, Ti)) Single Crystals","authors":"R. Ham, R. H. Cook, G. Purdy, G. Willoughby","doi":"10.1179/030634572790446118","DOIUrl":"https://doi.org/10.1179/030634572790446118","url":null,"abstract":"AbstractEarlier work by R. K. Ham, R. H. Cook, and G. R. Purdy (Metal Sci. J, 1972, 6, 73) has demonstrated that it is possible to produce a precipitate of the disordered nickel-rich terminal solid solution, γ, in a matrix of the ordered γ′ phase Ni3 (Al,Ti). The present paper shows that this precipitate increases the steady-state creep-resistance of the matrix and induces a prolonged initial stage of very low creep rate (‘nilcreep stage’). The end of the nil-creep stage was associated with loss of coherency of the γ precipitate and an increase in matrix dislocation activity. A model is proposed in which the particles are treated as attractive trapping sites for superlattice dislocations, so that measurable deformation can occur only when Ostwald ripening has increased the particle spacing to a level sufficient for Orowan looping of dislocations between the particles. This model accounts for many of the observed features of the nil-creep stage.","PeriodicalId":103313,"journal":{"name":"Metal Science Journal","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125185540","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: 15
Steady-State Creep and Associated Microstructures in Stoichiometric and Non-Stoichiometric Polycrystalline NiAl 化学计量和非化学计量多晶NiAl的稳态蠕变及其相关微观结构
Metal Science Journal Pub Date : 1900-01-01 DOI: 10.1179/030634573790445307
W. Yang, R. Dodd
{"title":"Steady-State Creep and Associated Microstructures in Stoichiometric and Non-Stoichiometric Polycrystalline NiAl","authors":"W. Yang, R. Dodd","doi":"10.1179/030634573790445307","DOIUrl":"https://doi.org/10.1179/030634573790445307","url":null,"abstract":"Abstract The high- and intermediate-temperature creep properties of NiAl are quite sensitive to deviations from stoichiometry, although the creep always appears to be diffusion-controlled. The unusual dislocation micro-structures in Al-rich NiAl and the demonstrated influence of impurities in stoichiometric NiAl preclude a straightforward analysis of intrinsic rate-determining mechanisms.","PeriodicalId":103313,"journal":{"name":"Metal Science Journal","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126138762","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: 46
The Effects of Curvature on the Dissolution Kinetics of Spherical Precipitates 曲率对球形沉淀溶解动力学的影响
Metal Science Journal Pub Date : 1900-01-01 DOI: 10.1179/MSC.1970.4.1.222
H. B. Aaron, G. Kotler
{"title":"The Effects of Curvature on the Dissolution Kinetics of Spherical Precipitates","authors":"H. B. Aaron, G. Kotler","doi":"10.1179/MSC.1970.4.1.222","DOIUrl":"https://doi.org/10.1179/MSC.1970.4.1.222","url":null,"abstract":"AbstractThe effects of curvature on the dissolution kinetics of spherical precipitates is investigated. This is accomplished by using a modified Gibbs–Thompson equation to represent the composition in the matrix at the precipitate/matrix interface as a function of precipitate radius. In this way one can account for the increasing curvature of the dissolving precipitate. The range of physical parameters for which the effect of curvature may appreciably alter the kinetics of diffusion-controlled dissolution is discussed. The presence of curvature tends to speed up dissolution, being particularly important at long times (i.e., small precipitate sizes) and when the difference between the solute concentration at the precipitate/matrix interface (Cr I ) and in the depleted matrix (C M ) is small. It is shown, however, that curvature will, in general, not sensibly affect the dissolution kinetics even at long times unless the concentration difference (Cr I – C M ) is sufficiently small.","PeriodicalId":103313,"journal":{"name":"Metal Science Journal","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128901597","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: 19
On the Martensitic Transformation in TiNi 论TiNi的马氏体相变
Metal Science Journal Pub Date : 1900-01-01 DOI: 10.1179/MSC.1967.1.1.104
R. Wasilewski, S. R. Butler, J. Hanlon
{"title":"On the Martensitic Transformation in TiNi","authors":"R. Wasilewski, S. R. Butler, J. Hanlon","doi":"10.1179/MSC.1967.1.1.104","DOIUrl":"https://doi.org/10.1179/MSC.1967.1.1.104","url":null,"abstract":"Abstract The structural transformation of the CsCl-type compound TiNi has been investigated by X-ray-diffraction, calorimetric, and metallographic methods. The transition is a first-order one, with a latent heat of 370 ± 20 cal/g-atom. It occurs rapidly and with small hysteresis in bulk material, the transition temperature varying with composition within the range 48–52 at.-%nickel, and its martensitic character was confirmed by metallographic and electron-microscope observations. The martensite (low-temperature) structure is probably of low symmetry. There is some evidence that different transition products are formed on either side of the stoichiometry. Oxygen level significantly affects the transition behaviour.","PeriodicalId":103313,"journal":{"name":"Metal Science Journal","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121924960","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: 67
The Structure and Mechanical Properties of Shock-Loaded Steels 冲击载荷钢的结构与力学性能
Metal Science Journal Pub Date : 1900-01-01 DOI: 10.1179/MSC.1967.1.1.75
H. Bowden, P. Kelly
{"title":"The Structure and Mechanical Properties of Shock-Loaded Steels","authors":"H. Bowden, P. Kelly","doi":"10.1179/MSC.1967.1.1.75","DOIUrl":"https://doi.org/10.1179/MSC.1967.1.1.75","url":null,"abstract":"AbstractTensile tests and transmission electron microscopy have been used to investigate the relationship between mechanical properties and microstructure in three plain carbon steels shock-loaded to peak pressures between 100 and 250 kilobars. The most dramatic change in structures and properties occurs at pressures in excess of that required to induce the phase transformation α → ɛ → α. The value of this pressure depends on the original microstructure of the steel, so that an annealed low-carbon steel shows considerable transformation at 150 kilobars, while a normalized 0.99% C steel does not transform until the peak pressure exceeds 200 kilobars. Below the transformation pressure the low-carbon steel is strengthened by shock-loading, while this does not occur in the two high-carbon steels.","PeriodicalId":103313,"journal":{"name":"Metal Science Journal","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122500531","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
The Shape Memory (‘Marmem’) Effect in Alloys 合金中的形状记忆(' Marmem ')效应
Metal Science Journal Pub Date : 1900-01-01 DOI: 10.1179/030634572790446028
C. M. Wayman, K. Shimizu
{"title":"The Shape Memory (‘Marmem’) Effect in Alloys","authors":"C. M. Wayman, K. Shimizu","doi":"10.1179/030634572790446028","DOIUrl":"https://doi.org/10.1179/030634572790446028","url":null,"abstract":"AbstractThe shape memory effect, by which a material, apparently plastically deformed, reverts to its original shape upon heating to some higher temperature, has been reviewed and discussed from the point of view of the crystallography of martensitic transformations. Considering the general characteristics of martensitic materials that exhibit the shape memory behaviour, some phenomena peculiar to the prototype NiTi alloy are shown to have no direct relation to the shape memory. It is concluded that the shape memory effect can be universally correlated with a martensitic transformation that is thermoelastic in nature, the thermoelasticity being attributed to ordering in the parent and martensitic phases.Prerequisites for the shape memory behaviour are suggested to be: (1) that the martensitic transformation is thermoelastic; (2) that the parent and martensitic phases are ordered; and (3) that the martensite is internally twinned. The low-temperature deformation process is discussed with reference to the l...","PeriodicalId":103313,"journal":{"name":"Metal Science Journal","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122601345","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: 106
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信