scholarly journals Replication Experiments and Microstructural Evolution of the Ancient Co-Fusion Steelmaking Process

Metals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1261
Author(s):  
Shangxiao Qiao ◽  
Wei Qian
Keyword(s):  
Carbon Content ◽  
Microstructural Evolution ◽  
Surface Hardness ◽  
Experimental Results ◽  
Steelmaking Process ◽  
Microstructural Characteristics ◽  
Simulation Experiments ◽  
History Of ◽  
Micro Analysis

The study of co-fusion was one of the essential topics in the history of metallurgy in China. Simulation experiments were an essential concept in the study of the co-fusion steelmaking process. This paper mainly studied the simulation experiments of co-fusion from two aspects: the replication of co-fusion swords by three different methods and the micro-analysis of the co-fusion samples. The experimental results indicated that several co-fusion swords could be made by different processes, but the carbon content and surface hardness were quite different. During repeated forge welding, the microstructure of the samples transformed from laminated to homogenized; finally, a steel with a uniform carbon content was obtained. It was challenging to determine the characteristics of co-fusion from the homogenized samples. The results prompt a rethinking of the microstructural characteristics of ancient co-fusion artifacts.

scholarly journals Replication Experiments and Microstructure Evolution of the Ancient Co-fusion Steelmaking Process

2020 ◽  
Author(s):  
Qiao Shangxiao ◽  
Wei Qian
Keyword(s):  
Carbon Content ◽  
Microstructure Evolution ◽  
Surface Hardness ◽  
Experimental Results ◽  
Steelmaking Process ◽  
Simulation Experiments ◽  
Microstructure Characteristics ◽  
History Of ◽  
Micro Analysis

The study of co-fusion was one of the essential topics in the history of metallurgy in China. Simulation experiments had been an essential concept in the study of the co-fusion steelmaking process. This paper mainly studied the simulation experiments of co-fusion from two aspects: the replication of co-fusion swords by three different methods, and the micro-analysis of the co-fusion samples. The experimental results indicated that several co-fusion swords could be made by different processes, but the carbon content and surface hardness were quite different. During repeated forging welded, the microstructure of the samples transformed from laminated to homogenized, finally the steel with a uniform carbon content was obtained. It was challenging to find the characteristics of co-fusion from the homogenized samples. The results prompted people to rethink the microstructure characteristics of ancient co-fusion artifacts.

scholarly journals Simulation of the External Pressure Influence on the Micro-Structural Evolution of a Single Crystal Ni-Based Superalloy

2011 ◽  
Vol 278 ◽  
pp. 247-252
Author(s):  
Inmaculada Lopez-Galilea ◽  
Stephan Huth ◽  
Suzana Gomes Fries ◽  
Ingo Steinbach ◽  
Werner Theisen
Keyword(s):  
Single Crystal ◽  
Microstructural Evolution ◽  
Phase Field ◽  
Structural Evolution ◽  
Field Method ◽  
External Pressure ◽  
Experimental Results ◽  
Alloying Elements ◽  
Phase Field Method

The phase field method has been applied to simulate the microstructural evolution of a commercial single crystal Ni-based superalloy during both, HIP and annealing treatments. The effects of applying high isostatic pressure on the microstructural evolution, which mainly retards the diffusion of the alloying elements causing the loss of the orientational coherency between the phases is demonstrated by the simulation and experimental results

scholarly journals A kézátültetés története: fejlődés a műtéti technikában, a gyógyszeres kezelésben és az átültetett kezek túlélésében. Irodalmi áttekintés

2017 ◽  
Vol 158 (38) ◽  
pp. 1483-1487
Author(s):  
Vilmos Bíró
Keyword(s):  
Quality Of Life ◽  
Final Outcome ◽  
Team Work ◽  
Experimental Results ◽  
Hand Transplantation ◽  
Significant Development ◽  
Technical Challenge ◽  
Medicinal Treatment ◽  
History Of

Abstract: The author summarizes briefly the history of hand allograft transplantation, the basics of the operative technics, and the medicinal treatment of the immunosuppression. He establishes that this operation requires complicated team-work: many specialists must be united in the interest of the successful final outcome. The biggest problem is not the technical challenge of the complicated operation, but the ineffectiveness of immunosuppression, its complications; even though significant development has happened in this field and experimental results are also encouraging. The author discusses these questions in this publication in the mirror of literature data. He states, that a successful hand transplantation, with its sensory and motoric functions can increase quality of life, in contrast with the ortheses. Orv Hetil. 2017; 158(38): 1483–1487.

scholarly journals EVOLUTION OF KARAKORAM SEQUENCE, HUNZA VALLEY NE PAKISTAN: EVIDENCES FROM FIELD MAPPING AND MICRO-ANALYTICAL WORK

2020 ◽  
Vol 5 ◽  
pp. 19
Author(s):  
S. S. Baig ◽  
C. Xue ◽  
Masroor Alam ◽  
Naeem Ullah ◽  
M. Alam ◽  
...  
Keyword(s):  
Geological Mapping ◽  
Central Portion ◽  
High Grade ◽  
Metamorphic Complex ◽  
Field Mapping ◽  
The North ◽  
Analytical Work ◽  
History Of ◽  
Micro Analysis ◽  
East West

The Karakoram metamorphic Complex (KMC) in the southern Karakoram block is one of the best examples of Barrovian type metamorphism that comprises numerous exhumed metapelite units where a series of low to high grade (green schist to sillimanite facie) rocks are exposed. This sequence shows a complex polyphase history of metamorphism and deformation which offer deeper understanding of collision orogeny. Karakoram metamorphic Complex contains metapelites, meta-carbonates, meta-igneous and amphibolite layers, cross-cut by granite sheets in the northern part. This complex is bounded to the north by the Hunza plutonic unit which is the central portion of the massive east-west trending Karakoram axial batholith and to the southwest by the Main Karakoram thrust (MKT). In this contribution, we provide detail geological mapping, petrography, geochemistry and micro-analytical work using Electron Prob-micro analysis in the central Hunza Valley.

Low Beam Energy X-Ray Micro Analysis: How Useful Is It?

1997 ◽  
Vol 3 (S2) ◽  
pp. 881-882 ◽  
Author(s):  
Dale E. Newbury
Keyword(s):  
Electron Beam ◽  
Beam Energy ◽  
Strong Dependence ◽  
Incident Beam ◽  
X Ray ◽  
Upper Limit ◽  
History Of ◽  
Incident Beam Energy ◽  
Micro Analysis ◽  
Electron Range

Throughout the history of electron-beam X-ray microanalysis, analysts have made good use of the strong dependence of electron range on incident energy (R ≈ E1,7) to optimize the analytical volume when attacking certain types of problems, such as inclusions in a matrix or layered specimens. The “conventional” energy range for quantitative electron beam X-ray microanalysis can be thought of as beginning at 10 keV and extending to the upper limit of the accelerating potential, typically 30 - 50 keV depending on the instrument. The lower limit of 10 keV is selected because this is the lowest incident beam energy for which there is a satisfactory analytical X-ray peak excited from the K-, L-, or M- shells (in a few cases, two shells are simultaneously excited, e.g., Fe-K and Fe-L) for every element in the Periodic Table that is accessible to X-ray spectrometry, beginning with Be (Ek =116 eV) and extending to the transuranic elements. This criterion is based upon establishing a minimum overvoltage U = E0/Ec > 1.25, which is the practical minimum for useful excitation.

An Influence of Player’s Ballot-Weight Changing in Consultation Algorithm

2013 ◽  
Vol 17 (5) ◽  
pp. 707-714
Author(s):  
Keisuke Touma ◽  
◽  
Satoshi Endo ◽  
Naruaki Toma ◽  
Yuhei Akamine ◽  
...  
Keyword(s):  
Experimental Results ◽  
Evaluation Function ◽  
Selection History ◽  
History Of

The validity of the consultation algorithm is shown in computer shogi. The consultation algorithm determines a move by votes of computer shogi players. In this research, we discuss a method that changes player vote weights during a game. To change player vote weights, we use the selection history of the move and the evaluation function value. Experimental results suggests the validity of our proposed method.

Cognitive Vulnerability to Auditory Hallucination

1983 ◽  
Vol 143 (3) ◽  
pp. 294-299 ◽  
Author(s):  
Alfred B. Heilbrun ◽  
Nancy Blum ◽  
Marilyn Haas
Keyword(s):  
Auditory Stimulus ◽  
Visual Imagery ◽  
Cognitive Vulnerability ◽  
Auditory Hallucination ◽  
Spatial Location ◽  
Experimental Results ◽  
Auditory Hallucinations ◽  
Auditory Imagery ◽  
Sensory Mode ◽  
History Of

SummaryGoldstone and Sarbin proposed that auditory hallucinations occur because imagery in a non-preferred sensory mode is more easily misinterpreted as having an external origin. This led to the hypothesis that auditory hallucinators would show less preference for auditory than for visual imagery. Our results suggest that this is true. We also compared the vividness of internally-generated auditory imagery with that of visual imagery, independently of preference, to see whether vividness was impaired in the non-preferred mode in hallucinators. The evidence suggested that this was not the case, but we did find a significantly deficient capacity for creating vivid images of either kind in process patients (i.e. those with poor premorbid status) compared with reactive (good premorbid) patients, regardless of any history of hallucinations. The withdrawal of external attention which characterizes process patients might also be expected to impair their ability to confirm or disconfirm the external origin of an auditory stimulus. We predicted therefore that process hallucinators would be particularly incompetent in spatial location of sounds: our experimental results confirmed this to be the case.

Experimental Study of CFB Modification Fly Ash in Concrete

2014 ◽  
Vol 1051 ◽  
pp. 743-747 ◽  
Author(s):  
Rong Jin Xu ◽  
Yan Kai Huo ◽  
Bin Teng ◽  
Si Hai Song
Keyword(s):  
Experimental Study ◽  
Fly Ash ◽  
Carbon Content ◽  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Pulverized Coal ◽  
Experimental Results ◽  
Unburned Carbon ◽  
Fluidized Bed Combustion ◽  
Effective Use

The character of the Fly ash of Circulating Fluidized Bed Boiler (CFB Fly ash) is greatly different from that of Pulverized coal furnace for its high unburned carbon. In order to make effective use of CFB Fly ash in concrete, carbon content was decreased by simulated fluidized bed combustion in laboratory and a series of concerned experiments were carried out on CFB Fly ash. The experimental results indicate that CFB modification Fly ash is possible to be used in concrete to partially replaced cement. It is a valuable reference for CFB Fly ash technical engineers.

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