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دانلود رایکان مقاله انگلیسی ISI با موضوع تاثیر بافت بر موضعی کردن تغییر شکل در منطقه فعالیت تیتانیوم جوشکاری اصطکاکی

عنوان فارسی مقاله:

تاثیر بافت بر موضعی کردن تغییر شکل در منطقه فعالیت تیتانیوم جوشکاری اصطکاکی

عنوان انگلیسی مقاله:

Influence of texture on strain localization in stir zone of friction stir welded titanium

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بخشی از مقاله انگلیسی :

3. Results and discussion

The influences of FSW parameters on joining performance of CP Ti butt joints are summarized in Fig. 1. The groove-like and inner cavity defects were detected when FSW was conducted at high welding speeds or low rotation rates, indicating that the generation of such defects was associated with the low thermal input and insufficient material flow. The overheating rough surface defects were observed when the high heat-input parameters, such as low welding speeds or high rotation rates, were used. Under appropriate adjustment of welding parameters, the joints without defect were obtained within a narrow range of welding parameters. Similar phenomena was also observed in FSW of pure titanium lap joints in which the optimum welding parameter range is quite narrow. The groove-like and inner cavitation defect formed at low heat input while the overheating rough surface defect was found when the high heat-input parameters were used [13,14].