Mechanical property statistical analysis of Gd50Al30Co20 amorphous wires for providing reference to design requirements of cooling system
Bin Luo1 Hong-xian Shen2 Lin Lin1 Hai-chao Li2 Da-wei Xing2 Jian-fei Sun2
1 School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China 2 School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China
Mechanical property statistical analysis of Gd50Al30Co20 amorphous wires for providing reference to design requirements of cooling system
Bin Luo1 Hong-xian Shen2 Lin Lin1 Hai-chao Li2 Da-wei Xing2 Jian-fei Sun2
1 School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China 2 School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China
ժҪ Gd50Al30Co20 wires show excellent magnetocaloric properties and high heat exchange rate due to the microsize. The Weibull and lognormal methods were used for systematically analyzing its mechanical properties for matching the design requirements in cooling system. The wire exhibits average fracture strength of ~969.5 MPa and typical fracture behavior of amorphous character. Moreover, the distributions of stresses for tensile strains at 10 values are estimated by probability plot and Chi-square goodness-of-fit test. The random stresses were best fitted by lognormal probability distribution for most studied cases; however, fracture strength was best fitted by Weibull probability distribution. It is interesting to note that the mean and standard deviation of the stresses (to reach specific tensile strain) increase as the tensile strain grows, accompanied by the coefficients of variation of stresses which decrease smoothly. It is concluded that the inhomogeneity of material does cause the scatter of stresses growth, and the scatter could be considerably large.
Abstract��Gd50Al30Co20 wires show excellent magnetocaloric properties and high heat exchange rate due to the microsize. The Weibull and lognormal methods were used for systematically analyzing its mechanical properties for matching the design requirements in cooling system. The wire exhibits average fracture strength of ~969.5 MPa and typical fracture behavior of amorphous character. Moreover, the distributions of stresses for tensile strains at 10 values are estimated by probability plot and Chi-square goodness-of-fit test. The random stresses were best fitted by lognormal probability distribution for most studied cases; however, fracture strength was best fitted by Weibull probability distribution. It is interesting to note that the mean and standard deviation of the stresses (to reach specific tensile strain) increase as the tensile strain grows, accompanied by the coefficients of variation of stresses which decrease smoothly. It is concluded that the inhomogeneity of material does cause the scatter of stresses growth, and the scatter could be considerably large.
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Bin Luo Hong-xian Shen Lin Lin Hai-chao Li Da-wei Xing Jian-fei Sun. Mechanical property statistical analysis of Gd50Al30Co20 amorphous wires for providing reference to design requirements of cooling system[J].Journal of Iron and Steel Research International, 2018, 25(3): 261-267.
Bin Luo Hong-xian Shen Lin Lin Hai-chao Li Da-wei Xing Jian-fei Sun. Mechanical property statistical analysis of Gd50Al30Co20 amorphous wires for providing reference to design requirements of cooling system. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2018, 25(3): 261-267.
