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CN105651603A 一种TC18钛合金网篮组织断裂韧性预测方法 无效 - 撤回

一种TC18钛合金网篮组织断裂韧性预测方法
摘要：
一种TC18钛合金网篮组织断裂韧性预测方法，通过综合考虑本征断裂抗力和外在断裂抗力对钛合金断裂韧性的影响，建立了基于钛合金拉伸性能和裂纹扩展路径的断裂韧性预测模型，并且制订了利用该模型进行钛合金断裂韧性预测的具体实施规范。本发明中，获得钛合金裂纹扩展路径曲折度是对其进行断裂韧性预测的重要环节。基于本发明，TC18钛合金断裂韧性被成功预测，预测误差在8％以内。本发明适用于任意种类和任意组织的钛合金。
摘要（英）：

A TC18 titanium alloy basketweave microstructure fracture toughness prediction method comprises the following steps: establishing a fracture toughness prediction model based on the tensile performance and the crack expansion path of titanium alloy through comprehensively considering influences of the intrinsic fracture resistance and external fracture resistance on the fracture toughness of the titanium alloy, and working out concrete enforcement standards for using the model to carry out titanium alloy fracture toughness prediction. Obtaining of the sinuosity of the crack expansion path of the titanium alloy is an important link in the fracture toughness predication of the titanium alloy in the invention. The method allows the fracture toughness of the TC18 titanium alloy to be successfully predicated, and the predication error is not greater than 8%. The method is suitable for any kind of titanium alloys with any microstructure.

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