Zobrazeno 1 - 10
of 33
pro vyhledávání: '"J W Spretnak"'
Publikováno v:
Metallurgical Transactions A. 8:729-740
The states of stress and strain at the root of V and U-notches were examined through the use of an elastic-plastic finite element computer program in an effort to develop a criterion for predicting the site of crack initiation. Using simple bending u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db9f8d3d5d0d8f48cd6b06c0b3894578
https://doi.org/10.1007/bf02664783
https://doi.org/10.1007/bf02664783
Autor:
J. W. Spretnak, Amiya K. Chakrabarti
Publikováno v:
Metallurgical Transactions A. 6:737-747
Two aspects of the phenomenon of plastic instability in direction of pure shear are examined, namely that the condition dσ = 0 (maximum in true flow stress) is necessary for localization of flow along characteristics as defined in continuum plastici
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59c2fe6fb05bc1f7e223aa2a3debea72
https://doi.org/10.1007/bf02672294
https://doi.org/10.1007/bf02672294
Autor:
J. W. Spretnak, Amiya K. Chakrabarti
Publikováno v:
Metallurgical Transactions A. 6:733-736
The localization of plastic flow (plastic instability) is a prelude to fracture initiation. Prior treatments are based mainly on the phenomenon of necking (load maximum) which has for its basis fluctuations in cross-sectional area. A second basic mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::322fb22539643979777432257fc18b58
https://doi.org/10.1007/bf02672293
https://doi.org/10.1007/bf02672293
Publikováno v:
Scripta Metallurgica. 8:743-750
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::775b5a41fbe27304de8a1d100cb478ba
https://doi.org/10.1016/0036-9748(74)90286-5
https://doi.org/10.1016/0036-9748(74)90286-5
Autor:
J. W. Spretnak, Kohichi Tanaka
Publikováno v:
Metallurgical Transactions. 4:443-454
The phenomenon of plastic instability in pure shear was studied at room temperature in heat treated high-strength AISI 4340 steels, employing the torsion test. The instability occurs after saturation of strain hardening by the dispersed carbide parti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8767f8bcfa64ad70e8a1ebea695e6a46
https://doi.org/10.1007/bf02648697
https://doi.org/10.1007/bf02648697
Autor:
C. A. GRIFFIS, J. W. SPRETNAK
Publikováno v:
Transactions of the Iron and Steel Institute of Japan. 9:372-387
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68cd0b9995ec06d7163b44b57417454d
https://doi.org/10.2355/isijinternational1966.9.372
https://doi.org/10.2355/isijinternational1966.9.372
Autor:
R. M. Goldhoff, J. W. Spretnak
Publikováno v:
JOM. 9:1278-1283
SpretnakThe distribution of boron in γ iron grains as a function of temperature is studied, employing three experimental techniques: a) grain growth in high purity Fe-C and Fe-C-B alloys, b) X-ray parameter measurements on Fe-B alloys as a function
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3e8b2016ed8a5b8b4b027e15cd904ad
https://doi.org/10.1007/bf03398308
https://doi.org/10.1007/bf03398308
Autor:
R. H. Ernst, J. W. Spretnak
Publikováno v:
Transactions of the Iron and Steel Institute of Japan. 9:361-371
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c03a274da20219352d9ba80b0169588
https://doi.org/10.2355/isijinternational1966.9.361
https://doi.org/10.2355/isijinternational1966.9.361
Publikováno v:
JOM. 8:1235-1240
The effect of up to 200 ppm hydrogen on the microstructure and mechanical properties of high-purity titanium containing oxygen, nitrogen, tin, and aluminum was investigated. Increasing the hydrogen content resulted in precipitation of a hydride phase
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab507ff1e3c4c29610dc9c9f03e2457d
https://doi.org/10.1007/bf03377857
https://doi.org/10.1007/bf03377857