A Metallographic Study of Multiaxial Creep-Fatigue Behavior in 316 Stainless Steel / ER. de los Rios, FA. Kandil, KJ. Miller, MW. Brown
- Conference Author
- Multiaxial Fatigue (1982 : San Francisco, California)
- Physical Description
- 1 online resource (19 pages) : illustrations, figures, tables
- Additional Creators
- de los Rios, ER., Kandil, FA., Miller, KJ., Brown, MW., American Society for Testing and Materials, and ASTM International
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License restrictions may limit access. - Summary
- A metallographic examination of elevated temperature multiaxial fatigue specimens of 316 stainless steel was conducted to identify the type of damage and other microstructural changes that occurred during testing. The work hardening which takes place at the beginning of the test is associated with the development of either a cell or a maze dislocation structure. Two main factors contribute to the flow stress, that is, dislocation and carbide precipitation hardening. Dislocation hardening prevails, but precipitation hardening, which increases with testing time, becomes significant for long hold-time and low-strain range tests. Fatigue cracks are predominantly transgranular. However, intergranular cracks have been observed in hold-time specimens and are related to grain-boundary sliding and grain-boundary precipitation. The fatigue fracture is a three stage process, the initial stage (Stage I) is crystallographic, extending for one to three grains. The intermediate stage (Stage II) is dominated by striations, with the exception of some featureless facets in biaxial specimens. The final stage (Stage III) is a dimple type fracture (tension fracture), beginning at shorter crack lengths in the hold-time and high-strain range specimens. Striation spacing calculations give approximate life estimates in low-cycle fatigue.
- Dates of Publication and/or Sequential Designation
- Volume 1985, Issue 853 (January 1985)
- Subject(s)
- Other Subject(s)
- ISBN
- 9780803149212 (e-ISBN)
9780803104440
0803104448 - Digital File Characteristics
- text file PDF
- Bibliography Note
- Includes bibliographical references 22.
- Other Forms
- Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
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Also available in PDF edition. - Reproduction Note
- Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1985. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
- Technical Details
- Mode of access: World Wide Web.
- Source of Acquisition
- ASTM International PDF Purchase price USD25.
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