Microstructure Change of Bionic Units on Vermicular Cast Iron Processed by Laser in Thermal Fatigue Tests

Yan Liu; Hong Zhou; Chun Yan Yang; Chao Meng; Chuan Wei Wang; Lu Quan Ren

doi:10.4028/www.scientific.net/AMR.562-564.156

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Microstructure Change of Bionic Units on Vermicular Cast Iron Processed by Laser in Thermal Fatigue Tests
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Microstructure Change of Bionic Units on Vermicular Cast Iron Processed by Laser in Thermal Fatigue Tests

Abstract:

This paper focuses on the microstructure change of bionic units, processed by the bionic laser, on vermicular cast iron, during the thermal fatigue tests. The results show that the microstructure of bionic units is uneven, and the thermal fatigue first occurs in the region with coarser microstructure on the surface of bionic units; the thermal fatigue failure mode of the bionic units is oxidizing, fracturing and peeling layer by layer.