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The Bauschinger effect in cold drawn patented wire

✍ Scribed by W.M. Stobbs; S. Paetke


Publisher
Elsevier Science
Year
1985
Weight
819 KB
Volume
33
Category
Article
ISSN
0001-6160

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✦ Synopsis


The magnitude of the Bauschinger effect in cold drawn patented wire is used to assess the importance of elastic stresses, built into it during the drawing process, in determining its flow behaviour.

Results are described for both room temperature and liquid nitrogen temperature tests on wire given a variety of post drawing heat treatments as well as stress relaxation fatiguing cycles. The work hardening behaviour of fine pearlite is also discussed in relation to the data obtained.

RCsum&Nous utilisons la gandeur de I'effet Bauschinger dans un fil patent6 i.tiri. g froid pour prkciser I'importance des contraintes elastiques produites au tours de 1'Ctirage pour la coractbrisation de son Ccoulement plastique. Nous dicrivons les rtsultats d'essais B la tempkrature ambiante et B la temptrature de l'azote liquide sur un fil qui a Bte soumis B divers traitements thermiques aprbs ttirage ainsi qu'8 des cycles de fatigue par relaxation de contrainte. Nous discutons tgalement le durcissement de la perlite fine en relation avec les rksultats obtenus.

Zusammenfassung-Die

GriiDe des Bauschinger-Effektes an kaltgezogenen bleigehlrteten Drlhten wird benutzt, urn die Bedeutung der wlhrend des Ziehens erzeugten inneren elastischen Spannungen fiir das FlieDverhalten abzuschitzen. Hierzu wurden Drghte, die nach dem Ziehen zur Spannungsreiaxation unterschiedlichen WIrmebehandlungen und Ermiidungszyklen unterworfen worden waren, bei Raumtemperatur und 78 K untersucht. Die Ergebnisse werden dargestellt. AuDerdem wird das Verfestigungsverhalten des feinen Perlits im Hinblick auf diese Ergebnisse diskutiert.


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