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排序方式: 共有79条查询结果,搜索用时 15 毫秒
1.
Role of compositional changes on thermal,magnetic,and mechanical properties of Fe-P-C-based amorphous alloys 下载免费PDF全文
Indah Raya Supat Chupradit Mustafa M Kadhim Mustafa Z Mahmoud Abduladheem Turki Jalil Aravindhan Surendar Sukaina Tuama Ghafel Yasser Fakri Mustafa Alexander N Bochvar 《中国物理 B》2022,31(1):16401-016401
This work aimed to tune the comprehensive properties of Fe-P-C-based amorphous system through investigating the role of microalloying process on the crystallization behavior,glass forming ability(GFA),soft magnetic features,and mechanical properties.Considering minor addition of elements into the system,it was found that the simultaneous microalloying of Ni and Co leads to the highest GFA,which was due to the optimization of compositional heterogeneity and creation of near-eutectic composition.Moreover,the FeCoNiCuPC amorphous alloy exhibited the best anelastic/viscoplastic behavior under the nanoindentation test,which was owing to the intensified structural fluctuations in the system.However,the improved plasticity by the extra Cu addition comes at the expense of magnetic properties,so that the saturation magnetization of this alloying system is significantly decreased compared to the FeCoPC amorphous alloy with the highest soft magnetic properties.In total,the results indicated that a combination of added elemental constitutes,i.e.,Fe69Co5Ni5Cu1P13C7 composition,provides an optimized state for the comprehensive properties in the alloying system. 相似文献
2.
李范春 《应用数学和力学(英文版)》2003,24(2)
A new elastic-viscoplastic mode was proposed to analyze the stress and strain fields surrounding the tip of a propagating mode Ⅰ cracks. A proper displacement pattern was suggested and asymptotic equations were derived, and numerical solutions were illustrated. The analysis and calculation show that the crack-tip field is of logarithmic singularity for smaller viscosity, however no solution exists for large viscosity. By a careful analysis and comparison, it is found that the present results retain all merits of those given by Gao Yu-chen, while removing existing problems. 相似文献
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The viscoplastic behaviour of a medium density ethylene–butene copolymer (MDPE) is investigated by using samples cut out from thick-walled MDPE pipe. Extensive experimental work has been performed to characterise the nonlinear time-dependent response of such semi-crystalline thermoplastic material. Tests were carried out at 60 °C, on smooth tensile, full axisymmetrically notched creep tensile (FNCT) and double edge notched tensile (DENT) specimens. 相似文献
5.
马景槐 《应用数学和力学(英文版)》1997,(1)
I.Viscoplastic-DynamicsConstitutiveRelationThestructurematerialwouldarisesimultaneouslytheelasticity,viscosityandplasticityindynamichighstraincondition.Atpresent,theovcrstressmodel,viscoplasticitymodel,quasi-linearconstitutiverelationtheoryandintrinsicvar… 相似文献
6.
弹/粘塑性柱体扭转问题的函数Laplace变换解 总被引:3,自引:1,他引:3
在应力Laplace变换分析粘塑性轴对称问题基础上,对弹性-弹/粘塑性圆柱体扭转全过程进行分析,根据柱体扭转的应力分布,构造应力函数与位移函数,并对函数进行Laplace变换。相应求出圆柱体、空心圆柱体的Laplace变换解,以及圆柱体的弹性-粘塑性交界线值 相似文献
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ASYMPTOTIC DYNAMIC SOLUTION TO THE MODE Ⅰ PROPAGATING CRACK-TIP FIELD IN ELASTIC-VISCOPLASTIC MATERIAL 总被引:1,自引:0,他引:1
Li Fan-chun 《应用数学和力学(英文版)》2003,24(2):208-215
A new elastic-viscoplastic mode was proposed to analyze the stress and strain fields surrounding the tip of a propagating mode Ⅰ cracks. A proper displacement pattern was suggested and asymptotic equations were derived, and numerical solutions were illustrated. The analysis and calculation show that the crack-tip field is of logarithmic singularity for smaller viscosity, however no solution exists for large viscosity. By a careful analysis and comparison, it is found that the present results retain all merits of those given by Gao Yu-chen, while removing existing problems. 相似文献