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首页> 外文期刊>Materials science forum >Effects of Peening Direction on Reverse Transformation Induced by Shot-Peening for Fe-33%Ni Alloy
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Effects of Peening Direction on Reverse Transformation Induced by Shot-Peening for Fe-33%Ni Alloy

机译：Peening方向对Fe-33％Ni合金射击喷丸诱导逆转变换的影响

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摘要

Effects of peening direction on the reverse transformation induced by the shot-peening for the Fe-33 mass%Ni alloy with large amount of martensite (α') are investigated. When the angle between the peened surface and the peening direction (Hereafter, peening angle) is 90°, the reverse transformation occurs and subsequently martensitic transformation is induced by the shot-peening. On the other hand, in case of the peening angle of 30 °, only reverse transformation occurs. Furthermore, the volume fraction of austenite (γ) in the specimen after the shot-peening increases as the peening angle decreases. This means that the reverse transformation induced by the shot-peening is enhanced by decreasing the peening angle. Moreover, residual compressive stress around the peened surface increases as the peening angle decreases. Since the hydrostatic compressive stress decreases phase transformation temperature, the phase transformation temperature around the peened surface would be decreased by the shot-peening. Therefore, the reverse transformation behavior depending on the peening angle can be explained by the residual compressive stress due to the shot-peening.
机译：研究了喷丸方向对具有大量马氏体（α'）的Fe-33质量％Ni合金诱导的射击诱导的逆转变换的影响。当喷射表面和喷丸方向之间的角度（以下，喷丸角度）为90°时，发生反转变换并随后由喷丸诱导马氏体转换。另一方面，在喷丸角30°的情况下，仅发生反向变换。此外，随着喷丸角减小，喷枪喷丸后的样品中奥氏体（γ）的体积分数增加。这意味着通过降低喷丸角来增强由喷丸亮起引起的反向变换。此外，随着喷丸的角度降低而围绕喷灌表面的残余压缩应力增加。由于静压压缩应力降低相变温度，喷丸表面周围的相变温度将通过喷丸消除。因此，可以通过喷丸喷丸引起的剩余压缩应力来解释取决于喷丸角的反向变换行为。

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