Influence effect of electric action on the micro structure of steel in crystallization

Recent work has drawn attention to the possibilities that small angle electron scattering offers as a source of information about the micro-structure of vacuum condensed films. In particular, this serves as a good detector of discontinuities within the films. A review of a kinematical theory describing the small angle scattering from a thin film composed of discrete particles packed close together will be presented. Such a model could be represented by a set of cylinders packed side by side in a two dimensional fluid-like array, the axis of the cylinders being normal to the film and the length of the cylinders becoming the thickness of the film. The Fourier transform of such an array can be regarded as a ring structure around the central beam in the plane of the film with the usual thickness transform in a direction normal to the film. The intensity profile across the ring structure is related to the radial distribution function of the spacing between cylinders.

Download Full-text

Micro-structure and magnetic properties of perpendicular magnetized Co-CoO sputtered films.

Journal of the Magnetics Society of Japan ◽

10.3379/jmsjmag.9.65 ◽

1985 ◽

Vol 9 (2) ◽

pp. 65-68 ◽

Cited By ~ 7

Author(s):

K. Tamari ◽

M. Ohkoshi ◽

S. Honda ◽

T. Kusuda

Keyword(s):

Magnetic Properties ◽

Micro Structure ◽

Sputtered Films

Download Full-text

Long bone fragility in NF1 is due to deficiency of architecture, micro-structure and matrix mineralization

Bone Abstracts ◽

10.1530/boneabs.1.pp454 ◽

2013 ◽

Author(s):

Jirko Kuhnisch ◽

Jong Seto ◽

Claudia Lange ◽

Susanne Schrof ◽

Sabine Stumpp ◽

...

Keyword(s):

Bone Fragility ◽

Long Bone ◽

Micro Structure ◽

Matrix Mineralization

Download Full-text

Evaluating Micro-Structure, Hydration and Thermal Expansions of Cement Containing Nano-Silica

GIS Business ◽

10.26643/gis.v15i1.18226 ◽

2020 ◽

Vol 15 (1) ◽

pp. 158-165 ◽

Cited By ~ 1

Author(s):

Dr. Sarvesh PS Rajput

Keyword(s):

Portland Cement ◽

Mechanical Characteristics ◽

Microstructural Properties ◽

Nano Silica ◽

Micro Structure ◽

Microstructural Characteristics ◽

Mechanical And Microstructural Properties

This study reported that the addition of nano-silica enhances the mechanical characteristics of concrete as its compressive, flexural and tensile split strengths are increased. As a comparison mixture to equate it along with nano-modified concrete, ordinary samples of Portland cement (OPC) have been utilized. Herein, upto 6.0 percent of OPC has been substituted by nanosilica. In fact, the introduction of nanosilica improves mechanical and microstructural characteristics of concrete by significantly (28 to 35%). The finding therefore, indicated that partly replacing OPC with up to 5 percent nanosilica increases the mechanical and microstructural properties cured up to ninety days as opposed to the standard OPC mix.

Download Full-text

Teknologi Inokulasi Besi Cor Kelabu FC-250 Untuk Mencegah Pengerasan Pada Dove Tale Produk Ragum Tipe 125

Jurnal Sains dan Teknologi Indonesia ◽

10.29122/jsti.v16i2.3408 ◽

2019 ◽

Vol 16 (2) ◽

Author(s):

Amin Suhadi ◽

Seodihono

Keyword(s):

Mechanical Properties ◽

Cast Iron ◽

Treatment Process ◽

Gray Cast Iron ◽

Spare Parts ◽

Gray Cast ◽

Micro Structure ◽

Control Factors ◽

Seed Inoculation ◽

Casting Industry

Production technology of metal casting industry in Indonesia needs to be improved, especially in the manufacturing of spare parts and box engine made of gray cast iron which has various wall thick such as dove tale construction. Microstructure of gray cast iron is influenced by cooling rate during casting, chemical composition and melting treatment process (inoculation). The part which has the thinnest thickness has the fastest cooling therefore, the grain boundary is smaller compared to other section. As a result this part has highest hardness and difficult to be machined. This research is conducted to solve this problem by modifying melting and solidification treatment process. The research starting from micro structure analysis, composition and mechanical properties tests on the product, and then conducting modification treatment through Taguchi method approach. Experimental results obtained show that the best level settings to control factors which affect to the uniformity of the microstructure and mechanical properties in gray cast iron is the addition of seed inoculation super ® 75, as much as 0.25% with the method of inoculation material entering into the Transfer Ladle.Teknologi produksi pada industri pengecoran di Indonesia masih membutuhkan perbaikan terutama dalam pembuatan komponen mesin perkakas dan peralatan pabrik yang terbuat dari besi tuang kelabu yang mempunyai variasi ketebalan yang besar seperti konstruksi ekor burung (dove tale). Pada pengecoran, struktur mikro dari besi tuang kelabu sangat dipengaruhi oleh kecepatan pendinginan, komposisi kimia dan proses perlakuan pada logam cair (inokulasi). Bagian yang mempunyai ukuran paling tipis mempunyai kecepatan pendinigan paling tinggi karena itu ukuran butirnya jauh lebih kecil dari bagian lain, akibatnya bagian ini mempunyai kekerasan lebih tinggi dan sulit dilakukan pengerjaan mesin. Penelitian ini bertujuan untuk memperbaiki hal ini yang terjadi pada dove taledengan cara memodifikasi proses perlakuan pada cairan besi dan proses pendinginan. Penelitian dimulai dari analisa struktur mikro, pengujian komposisi kimia, pengujian sifat mekanis pada produk kemudian dilakukan modifikasi menggunakan pendekatan metode statistik Taguchi. Hasil penelitian menunjukkan bahwa pengaturan terbaik yang dapat diperoleh untuk mendapatkan keseragaman struktur mikro dan sifat mekanis pada pengecoran besi tuang kelabu adalah penambahan seed inoculation super ® 75, sebesar 0.25% dengan metode pemasukan inokulasi kedalam Ladle pengangkut logam cair.Keywords: carbon, micro structure, hardness, inoculation

Download Full-text

Peculiarities of AD33 aluminum alloy hand laser welding

Science intensive technologies in mechanical engineering ◽

10.30987/2223-4608-2020-12-13-17 ◽

2020 ◽

Vol 2020 (12) ◽

pp. 13-17

Author(s):

Nikolay Proskuryakov ◽

Uliana Putilova ◽

Rasul Mamadaliev ◽

Oleg Teploukhov

Keyword(s):

Aluminum Alloy ◽

Laser Beam ◽

Laser Welding ◽

Welded Joint ◽

Comparative Investigation ◽

Micro Structure ◽

Joint Quality ◽

Beam Motion

The comparative investigation results of AD33 aluminum alloy welded joint quality dependence upon changes in a laser beam motion rate for conditions of hand and automatic laser welding are shown. A micro-structure of a welded joint at the hand and automatic laser welding of the AD33 alloy is investigated.

Download Full-text

The influence of information relevance on the continued influence effect of misinformation

10.31234/osf.io/uatjd ◽

2020 ◽

Author(s):

Hua Jin ◽

Lina Jia ◽

Xiaojuan Yin ◽

Shilin Wei ◽

Guiping Xu

Keyword(s):

Experimental Study ◽

Questionnaire Survey ◽

Personal Involvement ◽

Influence Effect ◽

Information Relevance ◽

Different Types ◽

Role Of Information

Misinformation often continues to influence people’s cognition even after corrected (the ‘continued influence effect of misinformation’, the CIEM). This study investigated the role of information relevance in the CIEM by questionnaire survey and experimental study. The results showed that information with higher relevance to the individuals had a larger CIEM, indicating a role of information relevance in the CIEM. Personal involvement might explain the effects of information relevance on the CIEM. This study provides insightful clues for reducing the CIEM in different types of misinformation and misinformation with varying relevance.

Download Full-text