Tensile and High‐Cycle Fatigue Properties of Steel Sheet with Trace Silicon

Zhang, Meng Xiao; Pang, J.C.; Zhu, Li Bei; Pan, Long; Nie, Liang Liang; Mao, Yun Xian; Chen, Man; Zhang, Zhe Feng

doi:10.1002/adem.201700476

Cited by 7 publications

(5 citation statements)

References 23 publications

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“…There is a little rust in the fatigue crack initiation region because of the repeated friction during the fatigue processing. In addition, the crack growth region is smooth, and the necking occurs in the final fracture region, which is similar to the tensile fracture as in Reference 33 The higher magnification pictures of the yellow frames are shown in Figure 7B-E, and the red circle is marked as a fatigue source where the divergent trend of crack growth can be seen clearly. Meanwhile, some fatigue arc lines can be seen in Figure 7C, and there are some small second cracks in Figure 7D.…”

Section: Fractographysupporting

confidence: 73%

“…In the present work, hot rolling steel plate 550TG was used, which has been widely used in the motor-generator rotor because of its better magnetic conductivity. 33 And the chemical compositions and mechanical properties are given in Table 2. 34 The full-scale of motor-generator rotor is a very large moving component as shown in Figure 4A.…”

Section: Experimental Materials and Specimensmentioning

confidence: 99%

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A prediction method for fatigue life of large moving components as function of scale factor: A case of motor‐generator rotor

Pan

Pang

Zhang

et al. 2017

Fatigue Fract Eng Mat Struct

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With the development of science and technology, more and more large moving components have been used in industry, and their service lives have become an important issue. After analysis of the previous results, considering the scale factor, a prediction method for fatigue life of large moving components based on the Basquin relation was proposed at first, and then the magnet pole part of motor‐generator rotor was chosen to make simulation parts with different scale factors mainly in terms of their S‐N curves and fractographies. It was found that with the change of specimen scale factor, the stress concentration factor at transition arc is almost unchanged as well as the fatigue strength exponent, and the fatigue strength coefficient changes linearly. Based on those results, a life prediction method was validated, and the results show that this method is a simple but more precise relation. After fatigue fracture surface and crack growth angle observations and quantitative analyses, the fatigue damage mechanisms associated with the relation among fatigue strength exponent and coefficient and scale factors were explained well. Those studies will provide a new clue to the prediction of the service life for those large moving components.

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Section: Fractographysupporting

confidence: 73%

Section: Experimental Materials and Specimensmentioning

confidence: 99%

A prediction method for fatigue life of large moving components as function of scale factor: A case of motor‐generator rotor

Pan

Pang

Zhang

et al. 2017

Fatigue Fract Eng Mat Struct

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“…For material with high tensile strength, the slope is higher and the fatigue life of inflection point is significantly less than 10 7 cycles (Figure a, b); but for material with lower tensile strength, the slope is lower and the fatigue life of inflection point is not obvious (Figure c, d) because of large scatter of data. In fact, the phenomenon can be found not only in 316L, but also in other materials such as the ferrite silicon steel, vermicular graphite irons and so on . Those may be attributed to the reasons as below: for the material with fine grains (high strength), the crack propagation resistance is relatively lower than that of material with coarse grains (low strength).…”

Section: Discussionmentioning

confidence: 99%

The Effect of Tailored Deformation on Fatigue Strength of Austenitic 316L Stainless Steel

Zhang

Pang

et al. 2018

Adv Eng Mater

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Fatigue failure is one of major problems of the structural components under cyclic loading; however the fatigue test is a time-consuming and high-cost process. Therefore, it is better to establish the relationship between the fatigue property and static mechanical properties of materials. The present studies mainly focus on the relationship between fatigue strength and tensile strength of 316L austenitic stainless steel prepared with four different technologies. The rolling results in severe plastic deformation; dislocation multiplication occurs inside the grains, and the elongated grains are parallel to the rolling direction. With the tensile strength increasing, the optimum fatigue strength reaches at an appropriate tensile strength. The fatigue strength is controlled by the tensile strength and the ability of work hardening, and based on this analysis a new method is established to estimate the fatigue strength. The competitive mechanism between fatigue crack initiation and propagation is also proposed to account for the different shapes of S-N curves.

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“…It is generally believed that the larger the degree of plastic deformation, the higher the tensile strength and fatigue strength will be. This is due to the high dislocation density increases the resistance to crack initiation 23 . But the fatigue properties of materials with large plastic deformation will also be adversely affected by the lack of work hardening ability.…”

Section: Introductionmentioning

confidence: 99%

“…This is due to the high dislocation density increases the resistance to crack initiation. 23 But the fatigue properties of materials with large plastic deformation will also be adversely affected by the lack of work hardening ability. However, the research on fatigue properties of aluminum alloy components with casting structure difference and plastic deformation difference (represented by cast spinning wheel) is still far from enough.…”

Section: Introductionmentioning

confidence: 99%

Casting and spinning aluminum alloy wheel fatigue properties and life prediction study

Zhang,

Song,

Yan

et al. 2023

Fatigue Fract Eng Mat Struct

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To accurately predict the fatigue life of cast aluminum alloy wheels, based on the results of finite element calculation and simulation, this work selected the rim area, inner flange and spoke areas to conduct systematic tensile and high‐cycle fatigue tests. The results show that the tensile properties of A356‐T6 cast aluminum alloy wheels are similar in various areas, but the fatigue properties are significantly different. Plastic deformation can improve the fatigue strength of the aluminum alloy, but the fatigue properties are also affected by deformation uniformity and other factors. Based on the difference of mechanical properties in different areas, this study also selected the characteristic loading spectrum to predict the fatigue life of wheels. A linear and a nonlinear damage accumulation were employed. The above methods are not only applicable to the wheel, but also provides a new idea for the life prediction of key parts in the engineering field.

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Tensile and High‐Cycle Fatigue Properties of Steel Sheet with Trace Silicon

Cited by 7 publications

References 23 publications

A prediction method for fatigue life of large moving components as function of scale factor: A case of motor‐generator rotor

A prediction method for fatigue life of large moving components as function of scale factor: A case of motor‐generator rotor

The Effect of Tailored Deformation on Fatigue Strength of Austenitic 316L Stainless Steel

Casting and spinning aluminum alloy wheel fatigue properties and life prediction study

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