Study of effect of aging on martensitic transformation and tribological properties of TiNi alloy using DSC, neutron diffraction, and micromechanical probing techniques

Friction and wear performance of austenite stainless steels have been extensively studied and show a close relationship with the friction-induced martensitic transformation. However, how the grain size and associated friction-induced martensitic transformation behavior affect the tribological properties of austenite steels have not been systematically studied. In this work, dry sliding tests were performed on an AISI 304 stainless steel with a grain size ranging from 25 to 92 μm. The friction-induced surface morphology and microstructure evolution were characterized. Friction-induced martensitic transformation behavior, including martensite nucleation, martensite growth and martensite variant selection and its effect on the friction and wear behavior of the 304 stainless steel were analyzed. The results showed that both the surface coefficient of friction (COF) and the wear rate increase with the grain size. The COF was reduced three times and wear rate was reduced by 30% as the grain size decreased from 92 to 25 μm. A possible mechanism is proposed to account for the effect of grain size on the tribological behavior. It is discussed that austenite steel with refined grain size tends to suppress the amount of friction-induced martensitic transformed and significantly alleviates both the plowing and adhesive effect during dry sliding.

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Martensitic transformation of Ni2.18Mn0.82Ga single crystal observed by neutron diffraction and synchrotron radiation white X-ray diffraction

Materials Science and Engineering A ◽

10.1016/j.msea.2006.01.129 ◽

2006 ◽

Vol 438-440 ◽

pp. 131-135 ◽

Cited By ~ 4

Author(s):

K. Inoue ◽

Y. Yamaguchi ◽

K. Ohsumi ◽

Y. Noda ◽

H. Kimura ◽

...

Keyword(s):

Martensitic Transformation ◽

Synchrotron Radiation ◽

Neutron Diffraction ◽

Single Crystal ◽

X Ray Diffraction ◽

X Ray

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HREM studies on the microstructure of severely cold-rolled TiNi alloy after reverse martensitic transformation

Materials Letters ◽

10.1016/s0167-577x(99)00095-6 ◽

1999 ◽

Vol 41 (1) ◽

pp. 9-15 ◽

Cited By ~ 7

Author(s):

Y.F. Zheng ◽

J.X. Zhang ◽

L.C. Zhao ◽

H.Q. Ye

Keyword(s):

Martensitic Transformation ◽

Tini Alloy ◽

Reverse Martensitic Transformation ◽

Cold Rolled

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Phase Transformation in Austenitic Steel Induced by Plastic Deformation

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.163.295 ◽

2010 ◽

Vol 163 ◽

pp. 295-298 ◽

Cited By ~ 4

Author(s):

Jan Drahokoupil ◽

Petr Haušild ◽

Vadim Davydov ◽

P. Pilvin

Keyword(s):

Plastic Deformation ◽

Phase Transformation ◽

Martensitic Transformation ◽

Neutron Diffraction ◽

Volume Fraction ◽

X Ray Diffraction ◽

X Ray ◽

Deformed State ◽

Kinetics Of ◽

Electron Back Scattered Diffraction

Kinetics of deformation induced martensitic transformation in metastable austenitic AISI 301 steel was characterized by several techniques including classical light metallography, X-ray diffraction, neutron diffraction and electron back scattered diffraction. In order to characterize the martensitic transformation, several specimens were tensile pre-deformed to 5%, 10% and 20% of plastic deformation and compared with non-deformed state. During straining, the volume fraction of α’-martensite rapidly prevails over the volume fraction of original austenite and reach the value circa 70%.

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