Journals / Politeknik Dergisi / 2021 / Cilt: 24 - Sayı: 1

Effects of Tool Rotation Speed and Pin Geometry on Properties in Friction Stir Welding of Brass

Takım Dönme Hızı ve Karıştırıcı Uç Geometrisinin Pirincin Sürtünme Karıştırma Kaynağında Özelliklere olan Etkileri

Pages
339–346
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The tensile test results show that a defect-free joint having weld performance of 81% of the base brass metal was achieved by using a conical pin without flattened at tool rotation speed of 800 rpm.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this study, CuZn37 brass sheets were joined by applying three different stirrer pins and different tool rotation speeds of 500, 800, and 1100 rpm by friction stir welding, while tool travel speed (40 mmmin-1), and other parameters were kept constant.
📊
Key Findings & Data:The tensile test results show that a defect-free joint having weld performance of 81% of the base brass metal was achieved by using a conical pin without flattened at tool rotation speed of 800 rpm.
💡
Conclusion & Impact:The peak temperature in the stir zones was increased with increasing of tool rotation speed, consequently arrived to 804 C at 1100 rpm.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:SKK · CuZn37 · takım dönme hızı

Abstract

In this study, CuZn37 brass sheets were joined by applying three different stirrer pins and different tool rotation speeds of 500, 800, and 1100 rpm by friction stir welding, while tool travel speed (40 mmmin-1), and other parameters were kept constant. Effects of the used weld parameters were investigated in weld zone and mechanical features via tensile test, microhardness measurement and optical and scanning electron microscopies. The rising of temperature in stir zone was also measured by using K-type thermocouple. The tensile test results show that a defect-free joint having weld performance of 81% of the base brass metal was achieved by using a conical pin without flattened at tool rotation speed of 800 rpm. The stir zone of this joint slightly softened according to the base metal and the heat-affected zones showed the lowest hardness values. The peak temperature in the stir zones was increased with increasing of tool rotation speed, consequently arrived to 804 C at 1100 rpm.

Özet

Bu çalışmada, CuZn37 pirinç levhalar, takım ilerleme hızı 40 mm/dakika olarak sabit iken 500, 800 ve 1100 devir/dakika takım dönme hızlarında, üç farklı karıştırıcı uç ile diğer parametreler sabitken sürtünme karıştırma kaynağı ile birleştirilmiştir. Uygulanan kaynak parametrelerinin kaynak bölgesine ve mekanik özelliklere olan etkileri çekme testi, mikrosertlik ölçümleri, optik ve taramalı elektron mikroskobu yardımıyla araştırılmıştır. Ayrıca karışım bölgesindeki sıcaklık değişimi K-tipi termokupl kullanarak ölçülmüştür. Çekme testi sonuçları, 800 devir/dakika takım dönme hızında ve sadece konik bir kesite sahip uç ile ana metale göre %81 kaynak performansında, hatasız bir birleştirme yapılabildiğini göstermiştir. Bu birleştirmenin karışım bölgesi ana metale göre bir miktar yumuşamış olup, en düşük sertlikler ısı tesiri altındaki bölgelerde ölçülmüştür. Karışım bölgesinin maksimum sıcaklığı, takım dönme hızının artmasıyla yükselmiş, 1100 devir/dakika’da ise 804 C’ye ulaşmıştır.

🔖

Cite This Article

BARLAS, Z. (2021). Effects of Tool Rotation Speed and Pin Geometry on Properties in Friction Stir Welding of Brass. Politeknik Dergisi, Cilt: 24 - Sayı: 1, 339–346. https://ajindex.com/articles/307003

References (14)

  1. Bringas J.E. and Wayman M.L., “Nonferrous Metals”, Fourth edition on CD-ROM, Casti Publishing Inc., Alberta, (2003)
  2. Lee W.B. and Jung S.B., “The Joint Properties of Copper by Friction Stir Welding”, Materials Letters, 58(6):1041-1046. (2004)
  3. Xue P., Xie G.M., Xiao B.L., Ma Z.Y. and Geng L., “Effect of Heat Input Conditions on Microstructure and Mechanical Properties of Friction-Stir-Welded Pure Copper”, Metallurgical and Materials Transactions A, 41A:2010-2021, (2010)
  4. Cam G., Serindag H.T., Cakan A., Mistikoglu S. and Yavuz H., “The Effect of Weld Parameters on Friction Stir Welding of Brass Plates”, Materialwissenschaft und Werkstofftechnik, 39(6):394-399, (2008)
  5. Baker H. (Ed.), “ASM Handbook, Welding, Brazing, and Soldering”, vol. 6, ASM International, USA, (1997)
  6. Thomas W.M., Nicholas E.D., Needham J.C., Murch M.G., Templesmith P. and Dawes C.J., International Patent Application No. PCT/GB92/02203 “Friction Stir Butt Welding”, (1991) and GB Patent Application No. 9125978.8, U.S. Patent No. 5,460,317 (1995)
  7. Verma S. and Misra J.P., “Critical Review of Friction Stir Welding Process”. Chapter 22 in DAAAM International Scientific Book, 249-266, (2015)
  8. Ozer A., Sik A., Cevik B. and Ozer M., “The effect of friction stir welding parameters on microstructure and fatigue strength of CuZn37 brass alloys”, Kovove materialy - Metallic Materials, 55(2):107-114, (2017)
  9. Dawes C. and Thomas W., “Friction Stir Joining of Aluminium Alloys”, Bulletin 6, TWI, 124-127, (1995)
  10. Kumar K., Kailas S.V. and Srivatsan T.S., “Influence of Tool Geometry in Friction Stir Welding”, Materials and Manufacturing Process, 23(2):188-194, (2008)
  11. Barlas Z. and Ozsarac U., “Effects of FSW Parameters on Joint Properties of AlMg3 Alloy”, Welding Journal, 91:16s-22s, (2012)
  12. Padmanaban G. and Balasubramanian V., “Selection of FSW Tool Pin Profile, Shoulder Diameter and Material for Joining AZ31B Magnesium Alloy-An Experimental Approach”, Materials and Design, 30(7):2647-2656, (2009)
  13. Rose A.R., Manisekar K. and Balasubramanian V., “Effect of axial force on microstructure and tensile properties of friction stir welded AZ61A magnesium alloy”, Transactions of Nonferrous Metals Society of China, 21(5):974-984. (2011)
  14. Seighalani K.R., Besharati Givi M.K., Nasiri A.M. and Bahemmat P.J., “Investigations on the Effects of the Tool Material, Geometry, and Tilt Angle on Friction Stir Welding of Pure Titanium”, Journal of Materials Eng