Influence of temperature and aging time on hardness and magnetic properties of the maraging steel grade 300

The magnetic properties and hardness of a Ni–Co–Mo–Ti maraging steel 300 grade were measured as function of aging temperature. The austenite and martensite phase quantifications in the different heat treatment conditions were carried out by X-ray diffraction using direct comparison method. The behavior of the hardening, magnetization saturation and coercive force against aging temperature and time were explained taking into account the variation of austenite volume fraction with aging time and temperature.

[1]  J. Pardal,et al.  X-ray diffraction and magnetic characterization of the retained austenite in a chromium alloyed high carbon steel , 2006 .

[2]  G. Thomas,et al.  Structure and properties of thermal-mechanically treated 304 stainless steel , 1970 .

[3]  H. Abreu,et al.  Magnetic properties of a Ni–Co–Mo–Ti maraging 350 steel , 2004 .

[4]  C. Servant,et al.  A comparison of the structural evolution occurring during anisothermal or isothermal treatments in the case of nickel and manganese type maraging alloys , 1985 .

[5]  S. Mazumder,et al.  Precipitation in 18 wt% Ni maraging steel of grade 350 , 2000 .

[6]  H. Abreu,et al.  Study of the austenite quantification by X-ray diffraction in the 18Ni-Co-Mo-Ti maraging 300 steel , 2006 .

[7]  C. Servant,et al.  Influence of the increasing content of Mo on the precipitation phenomena occurring during tempering in the maraging alloy Fe-12Mn-9Co-5Mo , 1988 .

[8]  U. Viswanathan,et al.  Precipitation hardening in 350 grade maraging steel , 1993, Metallurgical and Materials Transactions A.

[9]  S. Zwaag,et al.  Magnetic and X-ray diffraction measurements for the determination of retained austenite in TRIP steels , 2001 .

[10]  S. Charap,et al.  Physics of magnetism , 1964 .

[11]  B. Cullity,et al.  Elements of X-ray diffraction , 1957 .

[12]  Xiaodong Li,et al.  Reverted austenite during aging in 18Ni(350) maraging steel , 1995 .

[13]  S. Tavares,et al.  Magnetic properties of the UNS S39205 duplex stainless steel , 2003 .