Metastable lath martensite (α L ′ ) phase wires with high strengths have been produced in the Fe-Ni-Cr-Al-C alloy system by melt spinning in rotating water. These wires have a circular cross section and a white lustre and the wire diameter is in the range of 100 to 140μm. The width and length of each lath in theα L ′ phase are as small as about 0.3 and 2μm, respectively. Theσ y,σ f andε p are about 900 and 1650 MPa and 2.0% for theα L ′ wires. The subsequent annealing causes an increase in εp as well as σy and σf and the attained values are about 1000 and 1700 MPa and 3.0% for Fe-10Ni-10Cr-6.5 Al-1.0C wire annealed at 773 K for 1 h owing to the precipitation strengthening of a very fine unidentified carbide and to a high density of dislocations and lath boundaries in theα L ′ phase. Further annealing causes a significant decrease in εp through decomposition ofα L ′ toα+M7C3+M23C6. Therefore, the high strength combined with relatively good ductility for theα L ′ wires is interpreted as due to the suppression of the phase transformation ofα L ′ to a mixed structure ofα+M7C3+M23C6 by melt quenching.
This is a preview of subscription content, log in to check access.
Buy single article
Instant access to the full article PDF.
Price includes VAT for USA
Subscribe to journal
Immediate online access to all issues from 2019. Subscription will auto renew annually.
This is the net price. Taxes to be calculated in checkout.
A. Inoue, H. Tomioka andT. Masumoto,J. Mater. Sci. Lett. 1 (1982) 377.
Idem, Met. Trans. 14A (1983) 1367.
Idem, ibid. 14A (1983) 2319.
Idem, J. Mater. Sci. 19 (1984) 3786.
A. Inoue, T. Masumoto, H. Tomioka andN. Yano,Inter. J. Rapid Solidification 1 (1984) No. 2, in press.
A. Inoue, H. Tomioka, M. Hagiwara andT. Masumoto,Trans. Jpn. Inst. Metals 23 (1982) 341.
A. Inoue, H. Tomioka andT. Masumoto,Met. Trans. 16A (1985) No. 2, in press.
Idem,Trans. Iron Steel Inst. Jpn. 25 (1985) No. 9, in press.
A. Inoue, H. Tomioka, N. Yano andT. Masumoto, The Fifth International Conference on Rapidly Quenched Metals, Wurzburg, September (1984) to be submitted.
A. Inoue, H. Tomioka andT. Masumoto, private communication (1982).
I. Ohnaka, T. Fukusako andT. Daido,J. Jpn. Inst. Metals 45 (1981) 751.
T. Masumoto, I. Ohnaka, A. Inoue andM. Hagiwara,Scripta Metall. 15 (1981) 293.
B. L. Averbach andM. Cohen,Trans. AIME 176 (1948) 401.
R. L. Miller,Trans. Amer. Soc. Metals 57 (1964) 892.
T. Minemura, A. Inoue, Y. Kojima andT. Masumoto,Met. Trans. 11A (1980) 671.
T. Minemura, A. Inoue andT. Masumoto,Trans. Iron Steel Inst. Jpn. 21 (1981) 649.
T. Minemura, A. Inoue, Y. Kojima andT. Masumoto,ibid. 22 (1982) 934.
A. Inoue, T. Minemura, A. Kitamura andT. Masumoto,Met. Trans. 12A (1981) 1041.
A. Inoue, Y. Kojima, T. Minemura andT. Masumoto,ibid. 12A (1981) 1245.
Idem, Trans. Iron Steel Inst. Jpn. 21 (1981) 656.
T. Naohara, A. Inoue, T. Minemura, T. Masumoto andK. Kumada,Met. Trans. 13A (1982) 337.
A. Inoue, N. Yano andT. Masumoto, unpublished research (1984).
About this article
Cite this article
Inoue, A., Tomioka, H. & Masumoto, T. Microstructure and mechanical properties of metastable lath martensite wires in the Fe-Ni-Cr-Al-C system produced by melt spinning in rotating water. J Mater Sci 20, 2603–2613 (1985). https://doi.org/10.1007/BF00556092
- Mechanical Property