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Acta Metall Sin  1991, Vol. 27 Issue (2): 66-70    DOI:
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INDUCED TRANSFORMATION AND COLD WORKED HARDENING IN THREE STEELS DURING CONTACT FATIGUE
ZHANG Tongjun;HU Zhenhua;SHEN Guanxue;CUI Kun Huazhong University of Science and Technology; Wuhan
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ZHANG Tongjun;HU Zhenhua;SHEN Guanxue;CUI Kun Huazhong University of Science and Technology; Wuhan. INDUCED TRANSFORMATION AND COLD WORKED HARDENING IN THREE STEELS DURING CONTACT FATIGUE. Acta Metall Sin, 1991, 27(2): 66-70.

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Abstract  Investigations were made by TEM, back scattering Mossbauer spectra,etc. to study the contact fatigue properties, to observe the microstructures beforeand after contact fatigueing and to measure the microhardness distribution beneaththe contact surface of the three leading screw steels. The martensitic transformationof retained austenite and the cold worked hardening are induced by contact stress.The effect of induced transformation and cold. worked hardening on the contactfatigue properties has been discussed. It is believed that the contact fatigue proper-ties of the steels may be improved by means of increasing the austenite content, yettheir hardness does not reduce so much.
Key words:  contact fatigue      induced transformation      cold worked hardening     
Received:  18 February 1991     
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