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Sequential nucleation of phases in a 17-4PH steel: Microstructural characterisation and mechanical properties

Abstract:

A major concern for 17-4PH steels operating at elevated temperatures is embrittlement due to Fe-rich (α) and Cr-enriched (α′) phase separation, along with precipitation of other detrimental phases. In this study the sequence of microstructural changes at the atomic scale in a 17-4PH steel is characterized by atom probe tomography (APT) at two different ageing temperatures, 480 °C and 590 °C. In the earliest stages of heat treatment at both temperatures, APT reveals that dislocations and matri...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Publisher's Version

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Publisher copy:
10.1016/j.actamat.2016.11.052

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Department:
Oxford, MPLS, Materials
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Department:
Oxford, MPLS, Materials
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Author
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Department:
Oxford, MPLS, Materials
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Chinese Scholarship Council More from this funder
Rolls-Royce plc More from this funder
Publisher:
Elsevier Publisher's website
Journal:
Acta Materialia Journal website
Volume:
125
Pages:
38-49
Publication date:
2017-02-15
Acceptance date:
2016-11-22
DOI:
ISSN:
1359-6454
Pubs id:
pubs:666320
URN:
uri:4241a33b-e989-4198-a20a-a1a23221dc06
UUID:
uuid:4241a33b-e989-4198-a20a-a1a23221dc06
Local pid:
pubs:666320

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