OBJECTIVE:

• To work in an organisation with sheer dedication, sincerity, transparency and to grow up with organization

EXPERIENCE:

• Project intern in Defence Metallurgical Research Laborory from (Nov 16’- Oct 17’)

• Worked as post graduate trainee in ARCI,Hyderabad from June 2018 to May 2019

• Have been working as faculty in APIIIT NUZVID from August 2019 to May 2020 as contract based system.

ACADEMIC PROFILE:

COURSE INSTITUTION BOARD/UNIVERSITY YEAR OF

COMPLETION

MARKS M.Tech in

Industrial

Metallurgy

Andhra

university college

of

engineering

Visakhapatnam

Andhra University 81.3% (8.13-

CGPA)

B.Tech in

Metallurgical &

Material

Science

Engineering

IIIT- NUZVID

RGUKT- AP State board

8.13

(CGPA)

PUC

IIIT- NUZVID

RGUKT- AP State board 2011 8.19 (CGPA)

10th NLVRGSRV

School

Nimmakuru

APRS NIMMAKURU 2009 92.33%

PROJECT AND INTERNSHIP DETAILS:

• Preparation and characterization of Tungsten and HfCuNiAl Composite materials through Spark plasma sintering Technique (M.Tech). Lakshmi Jujjavarapu

D/O J.Purnachandra rao

D.No: 1 - 88

Meduru post

Pamidimukkala mandal

Krishna district

Andhra Pradesh

PIN - 521247 India

Mobile no: +91-817*******

Email address: adnu1f@r.postjobfree.com, adnu1f@r.postjobfree.com 2017

2015

BMG melt spun ribbons of two alloys with the compositions of Hf55Cu30Ni15 and Hf55Cu 28Ni5Al12 were prepared and characterized. Hf55Cu30Ni15 and Hf55Cu28Ni5Al12 alloys formed amorphous phase on melt spinning and Al added alloy shows higher GFA than other alloy by XRD analysis and GFA calculations. The tensile strength and strain of melt spun ribbon of Hf55Cu28Ni5Al12 BMG alloy decreases with the increasing strain rate. The maximum tensile strength achieved is 900 MPa for a strain rate of 1mm/min. SPS experiments using flaky ribbons of Hf55Cu30Ni15 and Hf55Cu28Ni5Al12 were carried out to assess the amorphous phase retaining ability. SPS pellets prepared using flaky amorphous ribbons showed that Al added BMG alloys showed higher density upto 99.2 % and retained its amorphous phase after SPS experiment. Then a novel idea of cryo milling was employed to make amorphous powder of melt spun Hf55Cu28Ni5Al12 BMG alloy. That powder particle exhibited approximately of 25µmsize by SEM analysis. Then Tungsten and Hf55Cu28Ni5Al12 BMG composites with 20, 25 and 30 % volume fractions of BMG, were prepared through spark plasma sintering method. W and Hf55Cu28Ni5Al12 BMG composites prepared using SPS shows that the density increases with increase in BMG volume fraction. The hardness of W and BMG composites showed increasing trend with increase in BMG volume fraction due to the increase in density and decrease in porosity. For evaluation purpose tensile strength of the Tungsten, BMG and composite were analyzed. Ultimate Tensile strength of the composite is of 1.8GPa whereas the W was having the tensile strength of 1.5GPa, and BMG is having 900MPa.When compared to W and BMG, Composite material exhibits better ultimate tensile properties.

• Single aging characteristics of Aluminum 6063 alloy.(B.Tech) This work is related to single aging presented a positive effect of hardness of AA 6063 alloy. And identified its hardness behaviour in different single aging times at the temperatures of 115ºC, 125ºC, 135ºC. This analysis led to the optimum age hardening can be achieved for the sample which was single aged to 135ºC for 16 hours of aging time. It exhibits a maximum hardness of 40.21 BHN measured on Brinell hardness tester and the single aging treatments are 545ºC for 3 hours 20 mins, solution treatment then at 135ºC, 16 Hrs aging. As temperature increases, the peak hardening shifts to shorter time of interval. As temperature increases, the value of hardness also increases. The aluminum solid solution and Mg2Si are observed in the XRD Patterns.

• Effect of welding parameters on weld bead characteristics & mechanical properties in SMAW & GTAW weldments ( B.TECH IIIrd year project) In this study tensile strength of the all specimens is greater than 5% below the minimum specified tensile strength of base metal. Peak current and pulse frequency are having directly proportional relationship with the tensile properties of the welded joints. At any given current, a small diameter electrode will have a higher current density and a higher deposition rate than a larger electrode. However a larger diameter electrode can carry more than a smaller electrode and a higher deposition rate at a amperage. Penetration and reinforcement increase with the increase in welding current. Weld bead width is directly proportional to the arc current, welding voltage and electrode diameter and indirectly proportional to the welding speed. The bead width increases with an increase in electrode diameter. The more the penetration, the less is the number of welding passé required to fill the weld joint which consequently results in higher production rate. If the welding speed is increased, power or heat input per unit length of weld is decreased and less filler metal is applied per unit length of the weld, resulting in less weld reinforcement. Internship:

• 2 week internship in Synergies Castings Pvt Ltd in is Visakhapatnam

• Attended a 2 days workshop on Nano science and Technology program held at IIT Madras in 2014.

• Attended a 2 days international conference on Magnetic materials and application program organized by DMRL Hyderabad in 2017.

SKILLS:

• Languages known: - Telugu,English, Hindi

• Good communication and presentation skills

• Good decision making skills and team building skills

• Time and stress management skills

• Technical and Scientific writing skills

• Willing to learn and apply new technologies

• Having good understanding skills, Hard-work, Self confidence. AREAS OF INTEREST:

• Material Science and Engineering

• Materials characterization

• Surface engineering

• Physical Metllurgy

• Composite Materials

• Welding Metallurgy

ACADAMIC AND SOFTWARE SKILLS:

• Python,basic C programming Basics of HTML and Latex

• Origin and Image Analysis Sofwares

• Can operate Ubuntu, Fedora, windows 7, windows 8 MACHINERY EXPERIENCE:

• Microscopy – SEM-EDS, Optical

• Spectroscopy – XRD

• Heat treatment technique Furnaces

• Mechanical property Characterization techniques – Vickers micro & macro, brinell, Rockwell Vacuum Melt spinning unit

• Spark Plasma sintering

• Planetary ball milling

• Cryo milling

• Differential Scanning Calorimetry

• Density measurement tester

• Universal Tesing meachine

• Electrical conductivity machine

• Polishing

• Digital hardness tester

• Surface roughness tester

• Scratch hardness tester

ACHIEVEMENTS & PUBLICATION:

• Secured Third Rank in Master’s degree & Top Grade acquired for Masters

• Got APRS seat in 2004 in state level

• Got IIIT seat in 2009 in state level And got school first in SSC.

• Got runner in state level tennicoit game

PERSONAL PROFILE:

Date of Birth : 12- 07-1993

Father’s Name : J.Purnachandra rao

Mother’s Name : Madhavi

REFERENCES :

Dr.D.Arvindha Babu,

Advanced Magntics Group,

DMRL-Hyderabad, Ph.no:

809-***-****

adnu1f@r.postjobfree.com

m

Declaration: I hereby declare that the above cited information is true to the best of my knowledge and belief, if given a chance, I can prove myself LAKSHMI JUJJAVARAPU

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