Results 81 to 90 of about 5,815 (226)
Space shuttle holddown post blast shield [PDF]
The original and subsequent designs of the Solid Rocket Booster/Holddown Post blast shield assemblies and their associated hardware are described. It presents the major problems encountered during their early use in the Space Shuttle Program, during the ...
Larracas, F. B.
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PENGARUH KECEPATAN AIR SIRKULASI SEBAGAI MEDIUM QUENCHING TERHADAP KEKERASAN DAN STRUKTUR MIKRO PADA BAJA AISI 4140 [PDF]
, 2006 Abstrak Baja karbon yang dipanaskan sampai pada suhu austenit kemudian didinginkan secara cepat akan terbentuk struktur martensit yang memiliki kekerasan yang lebih tinggi dari struktur perlit maupun ferit , proses ini biasa dikenal dengan ...
HARYADI, Gunawan Dwi
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Politeknik Dergisi, 2020 Bu çalışmada, karbon ve azot atomlarının eşzamanlı difüzyonu temeline dayanan nitrokarbürizasyon sonrası oksidasyon işlemlerinin AISI 4140 çeliğinin mikroyapı, mikrosertlik ve tribolojik özelliklerine etkileri incelenmiştir. Nitrokarbürizasyon işleminin birçok avantajı olmasına rağmen özellikle malzemelerin korozyon ve tribolojik özelliklerini ...
Yavuz KAPLAN +2 more
openaire +4 more sources
A compendium of sources of fracture toughness and fatigue crack growth data for metallic alloys, part 4 [PDF]
A collection of sources is presented of fracture toughness and fatigue crack growth data for metallic ...
Ferrainolo, John J., Hudson, C. Michael
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Reciprocal dry sliding wear behaviour of B4Cp reinforced aluminium alloy matrix composites [PDF]
, 2012 Manuscript DraftIn the present work, AlSi9Cu3Mg alloy matrix composites reinforced with 15 and 19% (vol.) B4Cp were produced by squeeze casting route at 850 °C under low vacuum.
Kerti, Isil +2 more
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Welding of stell ABNT4140 without posterior thermal treatment.
Revista Tecnologia, 2009 The procedure for conventional welding of the AISI 4140 steel, due to the martensite formation in the heated affected zone (HAZ), contemplates a postwelding heat treatment (PWHT) to relief the stress and to improve the toughness of this zone.
Jesualdo Pereira Farias +1 more
doaj
Corrosion Resistanne of the [TiN/CrN]n Coatings Deposited on Steel AISI 4140
International Journal of Electrochemical Science, 2013 In this paper is presented the improvement against corrosion of the multilayer coatings [TiN/CrN]n with periods of 20, 50, 100 and 200 bilayers deposited by the PVD magnetron sputtering technique on carbon steel AISI 4140.
W. Aperador, A. Delgado, J. Duque
doaj +1 more source
Study of the Performances of Nano-Case Treatment Cutting Tools on Carbon Steel Work Material during Turning Operation [PDF]
, 2018 The degree of holding temperature and time play a major role in nano-case treatment of cutting tools which immensely contributed to its performance during machining operation.
Abioye, Abiodun A. +5 more
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The study on the properties of AISI 4140 and AISI 1040 steel rods welded by friction welding
KKU Engineering Journal, 2014 This paper is aimed to investigate the properties of joint between AISI 4140 and AISI 1040 welded by friction welding. The specimens were prepared in round shape of 13 mm diameter and 100 mm long.
Thanee Toomprasen +2 more
doaj
International Journal of Electrochemical Science, 2014 This article presents the evaluation of the corrosion erosion resistance erosion caused by cavitation generated on the binary type coatings [TiN / CrN]200, ternary [TiN / AlTiN]200 and quaternary [TiCN / TiNbCN]200 obtained by physical vapour deposition ...
W. Aperador, E. Ruíz, A. Mejia
doaj +1 more source