α-钛中孪晶内部疲劳损伤的形成

Metal Science Journal Pub Date : 1900-01-01 DOI:10.1179/MSC.1969.3.1.74

C. Beevers, M. Halliday

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引用次数: 20

摘要

粗晶(~ 0.3 mm) α-钛在室温下以~ 100 Hz的频率在平均载荷为零的拉伸/压缩下疲劳。结合金相和微束x射线分析，发现存在{10¯2}-，{11¯1}-和{11¯2}-型双胞胎。在内部晶粒中，即完全受周围材料约束的晶粒，观察到疲劳损伤与{11.2¯有关

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On the Formation of Internal Fatigue Damage in Association with Twins in α-Titanium

AbstractCoarse-grained (∼0·3 mm) α-titanium has been fatigued in tension/compression about a zero mean load at a frequency of ∼ 100 Hz at room temperature. A combined metallographic and microbeam X-ray analysis revealed the presence of { 10 1 ¯ 2 } -, { 11 2 ¯ 1 } -, and { 11 2 ¯ 2 } - type twins. In internal grains, i.e. grains completely constrained by surrounding material, fatigue _damage was observed to be associated with the { 11 2 ¯

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Metal Science Journal

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