Effect of copper on the strength of AISI 316 stainless steel

R. A. Carolan, Che Yu Li, P. J. Maziasz, R. W. Swindeman, Judith Todd Copley, J. C. Ren

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The load relaxation test was used to evaluate the elevated temperature (>0.4 Tm) flow strength (as a function of strain rate and temperature) of a series of modified type AISI 316, austenitic stainless steels which had been given various thermomechanical pretreatments. Two classes of steels were investigated. The first contained only stabilizing additions; the second contained both stabilizing additions and copper. Under the same conditions the latter class of steels was found to have a much higher flow strength at all strain rates compared to the former class. Microstructural examinations showed that the high flow strength of the copper containing steels results from a larger number of finer matrix MC-type carbides which effectively pin dislocations. It is suggested that copper causes this finer distribution by increasing the stacking fault energy of the austenite lattice and thereby enhancing the nucleation rate of MC-type carbides on grain matrix dislocations.

Original languageEnglish (US)
Pages (from-to)421-429
Number of pages9
JournalMetallurgical Transactions A
Volume20
Issue number3
DOIs
StatePublished - Mar 1 1989

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Steel
Stainless Steel
Copper
stainless steels
Stainless steel
steels
copper
carbides
strain rate
Carbides
Strain rate
stacking fault energy
austenitic stainless steels
Stacking faults
Austenitic stainless steel
matrices
austenite
Crystal lattices
pretreatment
Austenite

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Carolan, R. A., Li, C. Y., Maziasz, P. J., Swindeman, R. W., Todd Copley, J., & Ren, J. C. (1989). Effect of copper on the strength of AISI 316 stainless steel. Metallurgical Transactions A, 20(3), 421-429. https://doi.org/10.1007/BF02653921
Carolan, R. A. ; Li, Che Yu ; Maziasz, P. J. ; Swindeman, R. W. ; Todd Copley, Judith ; Ren, J. C. / Effect of copper on the strength of AISI 316 stainless steel. In: Metallurgical Transactions A. 1989 ; Vol. 20, No. 3. pp. 421-429.
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Carolan, RA, Li, CY, Maziasz, PJ, Swindeman, RW, Todd Copley, J & Ren, JC 1989, 'Effect of copper on the strength of AISI 316 stainless steel', Metallurgical Transactions A, vol. 20, no. 3, pp. 421-429. https://doi.org/10.1007/BF02653921

Effect of copper on the strength of AISI 316 stainless steel. / Carolan, R. A.; Li, Che Yu; Maziasz, P. J.; Swindeman, R. W.; Todd Copley, Judith; Ren, J. C.

In: Metallurgical Transactions A, Vol. 20, No. 3, 01.03.1989, p. 421-429.

Research output: Contribution to journalArticle

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