Abstract

The influence of dynamic preload on the fatigue endurance limit of AMg6 alloy has been experimentally studied in a range of 10⁹ loading cycles. It is established that prestraining up to 10% deformation at 10³ s^–1 rate leads to a 22% decrease in the fatigue endurance limit. A mathematical model is proposed that can adequately predict fatigue fracture, including that after preload.

中文翻译：

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动态预紧力对AMg6合金疲劳极限的影响

摘要

动态预紧力对AMg6合金疲劳极限的影响已在10 ^9个载荷循环的范围内进行了实验研究。可以确定的是，以10 ³ s ^–1的速率预变形高达10％的变形会导致疲劳强度极限降低22％。提出了可以充分预测疲劳断裂的数学模型，包括预紧后的断裂。