Microstructural control of maraging steel C300

Abstract

The microstructure evolution and precipitation kinetics of maraging steel C300 have been studied in the aging temperature range from 400 to 600°C. The relation between mechanical properties and precipitation hardening response is explained, and modelling is used to optimise the properties. Ultrafine needle shaped Ni₃Ti phase is the main strengthening precipitate in maraging C300, and it shows very high resistance to coarsening. A spherically shaped Fe₂Mo phase is formed at higher temperatures and in the overaged condition. Inter- and intralath reverted austenite nucleates at higher temperature (∼600°C). Rolling and aging treatment can produce the highest hardness by a combination of work hardening and precipitation strengthening. Microstructural evolution simulation using Monte Carlo modelling has been applied to this alloy, and the modelling has been validated by the experimental results.

Keywords

Maraging steel C300 Transmission electron microscopy Aging Monte Carlo method Modelling

Get full access to this article

View all access options for this article.

References

Bhadeshia

H. K. D. H.

and Honeycombe

R. W.

: ‘Steels: microstructure and properties’, 207; 2006, Oxford, Butterworth Heinemann.

Floreen

: ‘ASM metals handbook’, 9th edn, Vol. 1, 445; 1978, Metals Park, OH, ASM.

Guo

, Sha

and Li

: Mater. Sci. Eng. A , 2004, A373, 10–20.

Yin

Y. F.

and Faulkner

R. G.

: Mater. Sci. Technol. , 2003, 19, 91–98.

Fa Yin

and Faulkner

R. G.

: Mater. Sci. Eng. A , 2003, A344, 92–102.

Tewari

, Mazumder

, Batra

I. S.

, Dey

G. K.

and Banerjee

: Acta Metall. Mater. , 2000, 48, 1187.

Tavares

S. S. M.

, Da Silva

M. R.

, Neto

J. M.

, Popa

and Abreu

H. F. G.

: J. Alloys Compd , 2002, 358, 152.

and Yin

: Mater. Lett. , 1995, 24, 239.

Tewari

, Mazumder

, Batra

I. S.

, Dey

G. K.

and Banerjee

: Acta Mater. , 2000, 48, 1187–1200.

10.

, Yang

and Sha

: Metall. Mater. Trans. A , 2005, 36A, 2273.

11.

Sinha

P. P.

, Tharian

K. T.

, Sreekumar

, Nagarajan

K. V.

and Sarma

D. S.

: Mater. Sci. Technol ., 1998, 14, 1–9.

12.

Pardal

J. M.

, Tavaresa

S. S. M.

, Terraa

V. F.

, Da Silva

M. R.

and Dos Santos

D. R.

: J. Alloys Compd , 2005, 393, 109–113.

13.

Viswanathan

U. K.

, Dey

G. K.

and Sethumadhavan

: Mater. Sci. Eng. A , 2005, A398, 367–372.

14.

Yin

Y. F.

and Faulkner

R. G.

: Energy Technol. , 2002, 21, P1247–P1256.

15.

Brandes

E. A.

and Brook

G. B.

: ‘Smithells metals reference book’; 1992, Oxford, Butterworth-Heinemann.

16.

Klugkist

: Phys. Status Solidi A , 1995, 148A, 2.

17.

MTDATA , National Physical Laboratory, Teddington, Middlesex, UK, 1989.

18.

, Yang

, Sha

and Cleland

D. J.

: Metall. Mater. Trans. A , 2004, 35A, 2747.

19.

Guo

, Li

and Sha

: Mater. Sci. Technol. , 2004, 20, 126–130.

20.

Bhadeshia

H. K. D. H.

and Honeycombe

: ‘Steels: microstructure and properties’, 32; 2006, Oxford, Butterworth Heinemann.

21.

Vasudervan

V. K.

, Kim

S. J.

and Wayman

C. M.

: Metall. Trans. A , 1990, 21A, 2655–2668.

22.

Tarasenko

L. V.

and Titov

V. I.

: Metalloved. Term. Obrab. Met. , 2005, 12, 10–15.