کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
829893 1470346 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Interfacial reactions and strength properties of diffusion bonded joints of Ti64 alloy and 17-4PH stainless steel using nickel alloy interlayer
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Interfacial reactions and strength properties of diffusion bonded joints of Ti64 alloy and 17-4PH stainless steel using nickel alloy interlayer
چکیده انگلیسی


• Ti64|NiA|PHSS joints has been carried out for industrial applications.
• Interface microstructure changes the joint optimized with bonding parameters.
• Reaction zone characterized and related to changes in mechanical properties of the joint.

Interfacial reactions and strength properties of diffusion bonded joints between Ti64 alloy (Ti64) and 17-4 precipitation hardening stainless steel (PHSS) using a nickel alloy (NiA) as an interlayer was carried out in the temperature range of 800–900 °C in steps of 25 °C for 45 min and at 900 °C for 5, 10, 15, 30 and 45 min in vacuum. The effects of bonding temperature and time on interface reactions of the bonded joint were characterized by scanning electron microscopy and electron probe microanalyser. The interfaces indicate that Ni–Ti base reaction products are formed at the NiA–Ti64 interface and the PHSS–NiA interface is free from intermetallics up to 875 °C for 45 min processing temperature and at 900 °C up to 15 min processing time. The bright regions of Fe5Cr35Ni40Ti15 have been observed within the Ni3Ti intermetallic layer. Fe–Ti and Fe–Cr–Ti bases reaction products have been observed beyond 15 min processing time at 900 °C temperature. Joint tensile was measured; a high tensile strength of ∼517.6 MPa along with ∼6.1% elongation was obtained for bonded joint when processed at 875 °C for 45 min. The bonded samples were fractured through the NiTi2 intermetallic compounds at NiA–Ti64 interface up to 875 °C for 45 min and up to 15 min at 900 °C. However, higher processing temperature, the fracture of the joints took place through the phase mixture of NiTi2 + Fe2Ti and β-Ti.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design - Volume 51, October 2013, Pages 714–722
نویسندگان
, , , ,