研究了[001]取向的冷却叶片模拟试样的拉伸性能与断口.分别从温度、薄壁厚度以及气膜孔3个方面分析对其力学性能的影响.结果表明:薄壁圆管试样在过峰值温度后,抗拉强度与屈服强度随温度上升而降低,延伸率与截面收缩率则不断递增；2mm比1.5 mm薄壁试样的抗拉强度、屈服强度、延伸率及截面收缩率都要大:带气膜孔试样存在应力应变集中,导致其抗拉强度与屈服强度,延伸率与截面收缩率都要比不带气膜孔试样的低.对试样断口进行SEM分析,结果表明在中温和高温条件下,断口呈现不同的断裂特点,850℃的试样断面由光滑斜平面组成,而980℃的断口则以韧窝断裂为主.
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