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Influence of the field humiture environment on the mechanical properties of 316L stainless steel repaired with Fe314 |
Lianzhong ZHANG, Dichen LI( ), Shenping YAN, Ruidong XIE, Hongliang QU |
State Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an 710049, China |
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Abstract The mechanical properties of 316L stainless steel repaired with Fe314 under different temperatures and humidities without inert gas protection were studied. Results indicated favorable compatibility between Fe314 and 316L stainless steel. The average yield strength, tensile strength, and sectional contraction percentage were higher in repaired samples than in 316L stainless steel, whereas the elongation rate was slightly lower. The different conditions of humiture environment on the repair sample exerted minimal influence on tensile and yield strengths. The Fe314 cladding layer was mainly composed of equiaxed grains and mixed with randomly oriented columnar crystal and tiny pores or impurities in the tissue. Results indicated that the hardness value of Fe314 cladding layer under different humiture environments ranged within 419–451.1 HV0.2. The field humiture environment also showed minimal impact on the average hardness of Fe314 cladding layers. Furthermore, 316L stainless steel can be repaired through laser cladding by using Fe314 powder without inert gas protection under different temperatures and humidity environments.
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Keywords
laser cladding
repaired performance
tensile strength
temperature and humidity environment
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Corresponding Author(s):
Dichen LI
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Just Accepted Date: 09 March 2018
Online First Date: 28 April 2018
Issue Date: 31 July 2018
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