分析其失效原因为铅合金在外力作用下，产生塑性变形引起的低周疲劳，造成断裂。
Through analysis, the failure reason was confirmed as that the low cycle fatigue caused by plastic deformation occurred in the lead alloy, thus the fracture occurred.
鉴于低模量、中高强度和良好塑性、韧性是医用合金作为外科植入物和矫形器械使用的重要先决条件。
The low modulus of elasticity, higher tensile strength, good plasticity and toughness are the most important premise for surgical implants and orthopedic devices.
这样，镁合金板材处于一种低强度、高塑性的软化状态，成形性能会得到明显的改善。
In this way, the magnesium alloy sheets are in a kind of state of softening of low intensity and high plasticity, and the forming can obtain obvious improvement.
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