Evaluation of Commercial Production A533-B Steel Plates and Weld Deposits with Extra-Low Copper Content for Radiation Resistance

2009 ◽  
pp. 235-235-17
Author(s):  
JR Hawthorne ◽  
JJ Koziol ◽  
ST Byrne
Keyword(s):  
Radiation Resistance ◽  
Copper Content ◽  
Commercial Production ◽  
Steel Plates

Further Observations on A533-B Steel Plate Tailored for Improved Radiation Embrittlement Resistance

1976 ◽  
Vol 98 (2) ◽  
pp. 111-117 ◽  
Author(s):  
J. R. Hawthorne
Keyword(s):  
Radiation Resistance ◽  
Test Performance ◽  
Copper Content ◽  
Radiation Embrittlement ◽  
Copper Addition ◽  
Melt Composition ◽  
Impurity Elements ◽  
Irradiation Behavior ◽  
Embrittlement Resistance ◽  
Primary Melt

A series of advanced investigations on the radiation performance of four 6-in-thick plates from a large (30-ton) commercial melt of A533-B steel is described. The melt represented the first commercial scale demonstration test of improved radiation embrittlement resistance through the control (minimization) of selected residual impurity elements. Melt specifications emphasized the attainment of a low copper and phosphorus content; one half of the melt was modified, however, by a copper addition (0.03 percent Cu increased to 0.13 percent Cu). Initial plate tests described superior 550 F (288 C) radiation resistance, in terms of notch ductility retention, for the primary melt composition and verified the detrimental influence of impurity copper on irradiation behavior. Promising capability of the primary melt composition for very high fluence (∼2.5 × 1020 n/cm2 > 1 MeV) service is shown by the current investigations. In addition, a significant influence of copper content on radiation resistance is revealed for a broad range of exposure temperatures. A dependence of 650 F (343 C) postirradiation heat treatment response (notch ductility recovery) on copper content was also found. Charpy-V versus dynamic tear test performance and tensile strength trends with temperature are examined for low (<450 F, 121 C) and elevated (550 to 585 F, 288 to 307 C) temperature irradiation conditions.

The Commercial Production of Oxygen

1909 ◽  
Vol 67 (1736supp) ◽  
pp. 233-234
Author(s):  
Alfred Gradenwitz
Keyword(s):  
Commercial Production

Tospovirus-Resistant Tomato Varieties for Southern Florida

EDIS ◽  
2017 ◽  
Vol 2017 (6) ◽  
Author(s):  
Rebecca L. Wente ◽  
Samuel F. Hutton ◽  
Scott Adkins ◽  
William Turechek ◽  
Joseph E. Funderburk
Keyword(s):  
Virus Resistance ◽  
Commercial Production ◽  
Dade County ◽  
Resistant Varieties ◽  
And Performance ◽  
Southern Florida

Authors describe performance of Tospovirus-resistant tomato varieties under commercial production settings in Dade County, FL. Virus resistance has become important for this area since the emergence of two new tomato-infecting tospoviruses. Knowledge of availability and performance of resistant varieties will help growers who are looking for alternative varieties.

Effect of planting time on the performance of broccoli under Mizoram conditions

2017 ◽  
Vol 17 (1) ◽  
pp. 15-18
Author(s):  
Donnie Lalfakzuala Kawlni ◽  
Chhungpuii Khawlhring
Keyword(s):  
Commercial Production ◽  
Plant Performance ◽  
Average Weight ◽  
Plant Spacing ◽  
Vegetable Crop ◽  
Marketable Yield ◽  
Sowing Time ◽  
Planting Time ◽  
Significant Difference ◽  
Cultural Requirements

Broccoli (Brassica oleracea var. italica), a popular vegetable crop, has one of the most exacting climatic and cultural requirements, which limit its commercial production to a few favored locations. A field experiment was conducted at Mizoram University, Tanhril, Mizoram during winter of 2013/2014 to find out the effect of time of sowing on plant performance and yield of broccoli. Six sowing time was done viz. 17 October (T1), 24 October (T2), 31 October (T3), 7 November (T4), 14 November (T5) and 21 November (T6) with plant spacing of 45cm x 45cm. Yield and yield contributing characters were significantly influenced by the planting time. Highest average weight of marketable curd per plant (199.20 g) was obtained from T2, whereas lowest average weight obtained from T6 (75 g). The influence of planting time also showed significant difference on the calculated yield (tonnes per hectare) of broccoli, in which T2 showed highest marketable yield of 9.83 t/ha.

Calculation And Experimental Substantiation Of Optimal Design Of The Welded Joint Of Plates On Соver Plates

2020 ◽  
pp. 17-24
Keyword(s):  
Welded Joint ◽  
Experimental Studies ◽  
Engineering Calculation ◽  
Tensile Tests ◽  
Physical Nonlinearity ◽  
Steel Plates ◽  
Optimal Parameters ◽  
Actual Problem ◽  
Numerical Research ◽  
Cover Plates

The article is devoted to the actual problem of assigning optimal parameters for connecting steel plates on cover plates with angular welds that are widely used in construction practice. The article presents the results of a comprehensive study of operation of a welded assembly of the plates connection on cover plates. An algorithm is proposed for determining the optimal parameters of a welded joint with fillet welds on the cover plates, which makes it possible to obtain a strength balanced connection. The results of full-scale tensile tests of models were presented. These results confirmed the correctness of the assumed design assumptions, and made it possible to obtain a form of destruction, not characteristic and not described in the normative literature, expressed by cutting the main elements along the length of the overlap in the joint. The possibility of such a form of destruction was confirmed by the results of numerical research in a nonlinear formulation. The optimal parameters of the nodal welded joint determined by engineering calculation are confirmed by experimental studies, as well as by the results of numerical experiments on models of calculation schemes, taking into account the physical nonlinearity of the material operation. The obtained dependence for determining the bearing capacity of the joint by the cut-off mechanism and the expression for limiting the overlap length of the cover plates will make it possible to predict the nature of the fracture and design equally strong joints.

Radiation resistance of metal-glass coatings for floating composite struc-tures

2015 ◽  
Vol 0 (1) ◽  
Author(s):  
Yuliya A. Kazimirenko ◽  
Valentina V. Shlapatskaya
Keyword(s):  
Radiation Resistance

Langmuir-Blodgett Nanotemplate and Radiation Resistance in Protein Crystals: State of the Art

2012 ◽  
Vol 22 (3) ◽  
pp. 219-232 ◽  
Author(s):  
Luca Belmonte ◽  
Eugenia Pechkova ◽  
Shailesh Tripathi ◽  
Dora Scudieri ◽  
Claudio Nicolini
Keyword(s):  
Radiation Resistance ◽  
State Of The Art ◽  
Protein Crystals ◽  
Langmuir Blodgett

Dynamic observation of high speed laser-arc combination welding of thick steel plates

1997 ◽  
Author(s):  
Nobuyuki Abe ◽  
Yasushi Kunugita ◽  
Masakazu Hayashi ◽  
Yoshiaki Tsuchitani
Keyword(s):  
High Speed ◽  
Steel Plates ◽  
Dynamic Observation ◽  
Thick Steel

Laser forming of thick steel plates with a high power diode laser

2001 ◽  
Author(s):  
Abe Nobuyuki ◽  
Nakagawa Naoki ◽  
Tsukamoto Masahiro ◽  
Nakacho Keiji ◽  
Sogabe Michihiro ◽  
...  
Keyword(s):  
Diode Laser ◽  
High Power ◽  
Steel Plates ◽  
Laser Forming ◽  
Thick Steel ◽  
Power Diode ◽  
High Power Diode Laser

Outline of Main Facilities for Producing Ultra Heavy Steel Plates

1975 ◽  
Vol 15 (9) ◽  
pp. 479-487
Author(s):  
Kanji EMOTO ◽  
Katsuhiko MIYATA ◽  
Akito TAKAHASHI ◽  
Michinaga SUZUKI ◽  
Toshihiro SEKINE
Keyword(s):  
Steel Plates
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