PSI - Issue 14

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2018) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000–000 Available online at www.sciencedirect.com ScienceDirect

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Procedia Structural Integrity 14 (2019) 883–890

2nd International Conference on Structural Integrity and Exhibition 2018 High Strain Rate Behavior of Aluminum Produced by Powder Metallurgy Tulsi Chouhan a* , Hemant Chouhan b , Manoj Soni a a Department of Mechanical & Automation Engineering, Indira Gandhi Delhi Technical University for Women, Delhi, India b Mechanical Engineering Department, Indian Institute of Technology Delhi, Hauz Khas, New Delhi -110016, India Abstract The presented study compares the compressive high strain rate behavior of Aluminum (Al) specimen fabricated from the powder as received, with the effect of ball milling and incorporation of high rock salt percent. Four different types of sample specimens were fabricated by compacting Aluminum powder followed by sintering in Argon atmosphere at 600  C for 3 hours. Sample types comprised of (i) Aluminum powder as received, (ii) ball-milled Aluminum powder for 24 hours, (iii) Aluminum powder with 33% rock salt and (iv) specimen of type three boiled in a water bath, respectively. The compressive high strain rate testing was done on a 16 mm Titanium bars based Split Hopkinson Pressure Bar (SHPB). For identical incident energy, different strain rates and stresses were attained by these four different types of Al samples. Ball milling of Al powder for 24 hours resulted in significant property variation, which enhanced the peak stress under compressive high strain rate loading. However, the damage pattern shifted from ductile in case of non-milled powder to partly brittle damage for ball milled Al specimens. Incorporation of higher rock salt percent was meant to produce relatively low-density Al. The resulting compressive stresses recorded were much lower and the corresponding damage was brittle in nature. Boiling in water bath dissolved salt but could not enhance the properties of Al specimen. The study reveals the importance of Al powder processing on the rate dependent stress-strain behavior of Aluminum specimen fabricated by powder metallurgy route. © 2018 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/) Selection and peer-review under responsibility of Peer-review under responsibility of the SICE 2018 organizers. 2nd International Conference on Structural Integrity and Exhibition 2018 High Strain Rate Behavior of Aluminum Produced by Powder Metallurgy Tulsi Chouhan a* , Hemant Chouhan b , Manoj Soni a a Department of Mechanical & Automation Engineering, Indira Ga dhi Delhi Technical University for Women, Delhi, India b Mechanical Engineering Department, Indian Institute of Technology Delhi, Hauz Khas, New Delhi -110016, India Abstract The pres nted study compares the compressive high strain rate behavi r of Aluminum (Al) specimen fabricated from the powder as ceived, with the effect of bal illing and incorp ration of high rock salt percent. F ur different types of sample peci ens were fabricat by compact g Aluminum powder followed by sintering in Argon atmosphere at 600  C for 3 ho rs. Sample types comprised of (i) Aluminum powder as rec ived, (ii) ball-milled Aluminum powder for 24 hours, (iii) Alum um powder ith 33% rock salt and (iv) specimen of type three bo led in a water bath, respectively. The ompressive high stra n rate testing was done on a 16 mm Ti nium ars based Spl t Hopkinson Pressure Bar (SHPB). For identical inci nt energy, different stra rates and stress s were tai ed by these four differ nt typ of Al samples. Ball milling of Al pow er for 24 hours r sulted in significant property variation, which e hanced the peak stress under compressiv high strain rate loading. However, the damage patt rn shifted from ductile in c se f n n-mill d powder to partly brittle damage for ball milled Al specimens. Incorpo ation of higher rock salt pe cent was me nt to produce re at vely low-density Al. The resulting compr ssive stresses recorded were much lower and the correspo ding damage w s brittle in nature. Boiling in water bath dissolved salt but could no e hance the properties of Al specimen. The study reveals the impo tance of Al powder processing on the rate dependent stress-strain behavior of Aluminum specimen fabricated by powder metallurgy route. © 2018 The Author . Published by Elsevier B.V. This is an open access article und r the CC BY-NC-ND lic nse (https://creativecommons.org/licenses/by- c-nd/4.0/) Selection and peer-review under responsibility of Peer-review under responsibility of the SICE 2018 organizers. © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/) Selection and peer-review under responsibility of Peer-review under responsibility of the SICE 2018 organizers.

Keywords: Dynamic compressive properties; Strain rate; Ball milling; Al matrix composite. Keywords: Dynamic compressive properties; Strain rate; Ball milling; Al matrix composite.

*Corresponding author. Tel.: +91-9650348707 E-mail address: tulsihchouhan@gmail.com *Corresponding author. Tel.: +91-9650348707 E-mail address: tulsihchouhan@gmail.com

2452-3216 © 2018 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/) Selection and peer-review under responsibility of Peer-review under responsibility of the SICE 2018 organizers. 2452-3216 © 2018 The Authors. Published by Elsevier B.V. This is an open access article und r the CC BY-NC-ND lic nse (https://creativecommons.org/licenses/by- c-nd/4.0/) Selection and peer-review under responsibility of Peer-review under responsibility of the SICE 2018 organizers.

2452-3216  2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/) Selection and peer-review under responsibility of Peer-review under responsibility of the SICE 2018 organizers. 10.1016/j.prostr.2019.07.067