NDLI: Effects of cold drawing ratio on δ phase precipitation behaviors of alloy 718 wire

Content Provider	Springer Nature Link
Author	Jeong, Yong Kwon Jo, Chang Yong Kim, Yeong Hwan Kim, In Bae
Copyright Year	1997
Abstract	The 8 phase precipitation behavior of cold drawn alloy 718 has been investigated at 1116 K as a function of cold drawn ratio and aging time. The planar markings formed by cold drawing were identified as deformation twins and developed more clearly as cold drawing ratio increases. The grain boundaries and twins were played as nucleation site of δ precipitation, therefore, cold drawing enhanced the precipitation of δ particles. As the cold drawing ratio and aging time increased the amount of round-shaped δ also increased. In a specimen which was 50% cold drawn and aged for 4 hrs. the finely dispersed δ phase precipitated throughout the material. As aging time increased. The round-shaped δ phase changed to plate-like morphology, and the morphology transformation time was increased with cold drawing ratio. With a 50% cold drawn specimen, the transformation time was 7 hrs. On the other hand, for the 50% cold drawn specimen aged for one hour at 1116 K, nucleation of the strain free grain was observed.
Starting Page	224
Ending Page	229
Page Count	6
File Format	PDF
ISSN	15989623
Journal	Metals and Materials
Volume Number	3
Issue Number	4
Language	English
Publisher	The Korean Institute of Metals and Materials
Publisher Date	1997-01-01
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Metallic Materials Operating Procedures, Materials Treatment Magnetism, Magnetic Materials Engineering Thermodynamics, Heat and Mass Transfer Characterization and Evaluation of Materials Continuum Mechanics and Mechanics of Materials
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Mechanics of Materials Metals and Alloys Condensed Matter Physics

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