片层宽度对TC21钛合金动态压缩性能及其绝热剪切敏感性的影响规律
RARE METAL MATERIALS AND ENGINEERING（2016）
Abstract
研究了冷却速率对TC21钛合金片层宽度的影响,并通过分离式霍普金森压杆,进一步研究了片层宽度对动态压缩性能及其绝热剪切敏感性的影响.结果表明:随着冷却速率的降低,片层组织TC21钛合金的片层宽度由0.57 μm增宽到6.49 μm;在动态压缩试验条件下,片层组织随着片层宽度增加,动态强度降低,而塑性应变呈现出相反的规律;在强迫剪切试验条件下,片层组织随着片层宽度增加,其绝热剪切敏感性降低,而随着撞击杆初速的提高,每种片层组织的绝热剪切敏感性均提高.
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Key words
TC21 alloy,lamellar microstructure,dynamic mechanical properties,sensitivity to adiabatic shear banding
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