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循环硬化     
相关语句
  cyclic hardening
     The cyclic hardening ability of alloys with high titanium content such as E14 and M14 alloys is higher than that of alloys with low titanium content such as E10 and M10 alloys.
     具有较高钛含量的E14、M14合金的循环硬化能力高于低钛含量的E10和M10合金;
短句来源
     A Study on Cyclic Hardening and Softening in the Surface Layer of Annealed and Cold Strained 0.45% C Steel with X-Ray Technique
     退火态与冷拔态0.45%C钢表层的循环硬化与软化的X射线研究
短句来源
     A STUDY ON THE RATCHETING BEHAVIOR FOR CYCLIC SOFTENING 45 CARBON STEEL AND CYCLIC HARDENING 304 STAINLESS STEEL MATERIALS
     循环软化45碳钢和循环硬化304不锈钢的棘轮行为实验研究
短句来源
     The TSH model improves the precision of modeling monotonic tension and cyclic hardening,while the MSH model has more capability of modeling cyclic mean stress relaxation and ratcheting under asymmetric loading condition.
     并将TSH模型和MSH模型用于Udimet720Li材料高温非弹性变形特征的描述,TSH模型改善了B-P模型在模拟单调拉伸和循环硬化方面的精度,但MSH模型在描述非对称循环载荷下平均应力松弛和Ratcheting应变方面具有更强的能力.
短句来源
     Implicit stress integration and finite element implementation of constitutive model for cyclic hardening materials
     循环硬化材料本构模型的隐式应力积分和有限元实现
短句来源
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  cycle hardening
     In microstructure, cycle hardening is related to dislocation multiplication and dislocation tangle, on the other hand, cycle softening is mainly due to decreasing of dislocation density and forming of dislocation cell structure.
     微观上,循环硬化与位错增殖及位错缠结有关,循环软化主要由于位错密度降低,位错胞结构形成。
短句来源
     HIGH STRAIN CYCLE HARDENING AND SOFTENING ACTIONS OF V, Ti MICROALLOYED STEELS AND THEIR MICRO-MECHANISM
     钒钛微合金钢高应变循环硬化软化行为及其微观机制
短句来源
     The results show that four kinds of A356 alloys show cycle hardening behavior.
     结果表明:4种合金均表现为明显的循环硬化行为;
短句来源
     The cycle hardening happens at 20 ℃~150 ℃ and the hardening degree weakens while temperature rising.
     在20℃~150℃之间,表现为循环硬化,且硬化程度随温度升高而减弱;
短句来源
     The results show that high train Low cycle hardening and softening of V, Ti micrealloyed steels are influenced by microalloying and the value of strain.
     结果表明:钒钛微合金钢的高应变循环硬化、软化受微合金化及应变量等因素影响。
短句来源
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  cyclical hardening
     STUDY ON CYCLICAL HARDENING OF CARBON STEEL UNDER HIGH CYCLE FATIGUE
     低碳钢在高周疲劳循环下的循环硬化问题研究
短句来源
  “循环硬化”译为未确定词的双语例句
     The effects of Ti alloying method and Ti content on the low cycle fatigue behaviors of A356 alloy were investigated.
     研究了不同加钛方式和钛含量对A356合金低周疲劳性能的影响,结果表明A356合金的循环硬化行为对合金的加钛方式和钛含量敏感。
短句来源
     Results show that steel 19Mn5 is cyclic strain hardenning material, and steel BHW35 and its electroslag weld metal are cyclic strain softenning materials.
     结果表明:19Mn5钢属循环硬化材料; BHW35及其焊缝材料属循环软化材料。
短句来源
     The fatigue fracture surface typicd mophology of ZCuSn10P1 were dimples and stripes.
     ZCuSn10P1表现为循环硬化,疲劳断口以韧窝和疲劳辉纹为主。
短句来源
     The experimental results show that the axle-steel isin the catagory of Masing steel. It is cyclic softening or hardening resp-ectively with the strain magnitude ε_α<0.4% or ε_α>4%.
     试验结果表明,车轴钢属Masing型材料,在应变幅ε_α<0.4%时为循环软化,ε_α>0.4%时为循环硬化
短句来源
     The σ-N curve and parameters of fatigue were measured.
     得到了 σ-N循环硬化/软化曲线。
短句来源
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  cyclic hardening
(i) cyclic hardening, (ii) softening, (iii) saturation, and (iv) crack initiation could be identified using the MBE parameters.
      
Dissipative processes during cyclic hardening of spheroidal graphite cast iron
      
The mathematical description of cyclic hardening emerging from this picture is applied to strain-amplitude-controlled cyclic deformation and compared with corresponding observations.
      
e., dependence of cyclic hardening of materials on the cyclic strain and stress ranges.
      
This dependence is essential to structural analysis of cyclic plasticity, because structures have, in general, nonuniform distributions of the cyclic strain and stress ranges, resulting in nonuniform development of cyclic hardening.
      
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The microstructure in shot-peening surface plastic straining layer of several softening and hardening materials are investigated. It was found that this plastic strain is not the same of simple monotonic plastic strain, but a cyclic plastic strain. As a result of cyclic strain, material in the surface layer subjects to "cyclic hardening/softening"as it changes in the strain fatigue test. The appearence of cyclic hardening/softening depends on the virgin microstructure of materials and the shot-peening intensity....

The microstructure in shot-peening surface plastic straining layer of several softening and hardening materials are investigated. It was found that this plastic strain is not the same of simple monotonic plastic strain, but a cyclic plastic strain. As a result of cyclic strain, material in the surface layer subjects to "cyclic hardening/softening"as it changes in the strain fatigue test. The appearence of cyclic hardening/softening depends on the virgin microstructure of materials and the shot-peening intensity. For the softening materials, the cyclic hardening is taken place during shot-peening, while for the hardening materials (martensite or maraging steels) , the cyclic softening is taken place at first, then cyclic rehardening is followed during shot-peening. It was found that the cyclic hardening/softening behaviours in the shot-peening surface layer are dependent on the variations of subgrain size, lattice distortion and excess dislocation density in the materials.

研究了软化和硬化材料表面喷丸应变层内的组织结构。结果表明,这种应变并不是一种简单的单凋塑性应变,而是循环塑性应变。循环应变使表层材料发生“循环硬化(或软化)”,与在应变疲劳中所发生的变化相类似。材料喷丸后发生循环硬化或软化,取决于材料的原始组织结构以及喷丸强度。对于软化材料,喷丸过程中发生循环硬化;而对于硬化材料(马氏体钢或时效马氏体钢),则首先发生循环软化,然后转为循环再硬化。试验表明,这种循环硬化(或软化)的性质取决于材料的亚晶粒尺寸,点阵畸变和位错密度。

The strain sequence effects of multiple step test procedure in low cycle fatigue were emphatically studied, and it was found that all the steels studied possess evident strain sequence effect, that is, the cyclic σ-ε curves obtained from the increasing and decreasing strain amplitude sequence test have considerable difference. The cyclic σ-ε response of steels in decreasing strain amplitude sequence are more thorough, and it cyclic σ-ε curve is more approaching to the basic cyclicσ-ε curve obtained from normal...

The strain sequence effects of multiple step test procedure in low cycle fatigue were emphatically studied, and it was found that all the steels studied possess evident strain sequence effect, that is, the cyclic σ-ε curves obtained from the increasing and decreasing strain amplitude sequence test have considerable difference. The cyclic σ-ε response of steels in decreasing strain amplitude sequence are more thorough, and it cyclic σ-ε curve is more approaching to the basic cyclicσ-ε curve obtained from normal test. The steel 40Cr has revealed cyclic softening. The steel 1Crl8Ni9Ti has revealed cyclic hardening. In the condition without stable hysteresis loop in cyclic stable "saturation" state of metals, it is rather reasonable to take the half hysteresis loop as the stable hystersis loop. It is possibly a reasonable and effective way to analyse and study the cyclic σ-ε behavior from the view point of energy. The experimental data obtained have been preliminarity analysed by means of cyclic hysteresis energy.

本文着重研究多级法低周疲劳试验时的应变顺序效性,发现所研究的钢均有明显的应变顺序效应,即增幅与减幅应变顺序时所得到的循环σ-ε曲线有明显差异。减幅应变顺序时钢的循环σ-ε行为更为充分,其循环σ-ε曲线更接近正规试验时所得到的基本循环σ-ε曲线。40Cr钢显示循环软化,1Cr18Ni9Ti钢显示循环硬化。当金属不存在循环稳定化“饱和”状态时,选取半寿命环作为稳定滞后环比较合理。从能量观点分析和研究金属的循环σ-ε行为可能是一条合理而有效的途径。本文用循环滞后能初步分析了所得试验数据。

Symmetric push-pull fatigue was performed on well annealed 99.999% purity Al specimens with grain sizes up to 10 mm under constant strain amplitude in a Schenck machine. The applied strain amplitudes ranged from ±2.82×10~(-4) to ±6.1×10~(-3). Peak stresses in both tensile and compressive half-cycle after various cycles were measured. A secondary cyclic hardening was observed at all strain amplitudes used. A maximum of the hardening is presented at a strain amplitude of about 3×10~(-3).

对充分退火的、晶粒尺寸超过10 mm的99.999%纯Al试样在Schenck试验机上进行了恒应变幅的对称拉-压疲劳试验。应变幅的范围从2.82×10~(-4)到6.1×10~(-3)。测量了各个循环之后的拉、压半周的峰值应力。在所用应变范围内,都观察到二次循环硬化,并在大约3.0×10~(-3)的应变幅处有一个最大值。金相和电子扫描显微镜的观察表明,在高应变幅下,在晶界区域内产生不同的塑性应变,导致与穿晶裂纹联接的晶界滑动和迁移。在同一断裂面上存在不同型式的疲劳条纹。作为简单的讨论。假定二次硬化是二次滑移和晶界滑动过程中局部硬化的结果。

 
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