期刊
WEAR
卷 376, 期 -, 页码 1938-1946出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.wear.2017.02.035
关键词
Rail material; Rail weld joint; Impact wear; Damage mechanism; Wear mapping
资金
- National Natural Science Foundation of China [51475393]
The impact wear behaviour and damage mechanism and transitions of rail weld joint and rail materials were explored using a cyclic impact tester under dry conditions. The results indicate that the impact wear volume of rail weld joint and rail material increases with the number of impact cycles or impact force increasing and the resistance to impact wear of rail weld joint is better than that of rail material. The impact wear mapping including three regions is developed and there is a transition zone with an increase in impact number and impact force. Meanwhile, two kinds of pit formed and the different mechanisms are noted. There is a different crack growth path for rail material and rail weld joint due to the different microstructure of materials. (C) 2017 Elsevier B.V. All rights reserved.
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