NSTD Research Projects: TRP

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Proposals

Year 1
Year 2
Year 3

Quarterly Reports

2001: 3rd, 4th
2002: 1st, 2nd, 3rd, 4th
2003: 1st, 2nd, 3rd, 4th
2004: 1st, 2nd, 3rd, 4th

Annual Reports

2001-2002 (submission)
2002-2003 (submission)
2003-2004 (submission)
2004-2005

Other

Task Products

TRP -> Campaign/Number -> TRP 04

TRP 04. Environment-Induced Degradation and Crack-Growth Studies of Candidate Target Materials

Research Objectives & Methods

This investigation was focused on the evaluation of the susceptibility of all three martensitic alloys to SCC, HE, and localized corrosion in neutral and acidic aqueous environments at ambient and elevated temperatures. State-of-the-art experimental techniques including constant-load (CL), slow-strain-rate (SSR), and cyclic potentiodynamic polarization were employed to evaluate these corrosion phenomena. The susceptibility of these alloys to HE was evaluated by applying cathodic potential while the test specimens were loaded in tension by the SSR method. Optical microscopy and scanning electron microscopy (SEM) were used to analyze the metallurgical microstructures and fractography, respectively of the tested specimens.

Researchers

• Ajit Roy, Mechanical Engineering
• Brendon O'Toole, Mechanical Engineering
• Zhiyong Wang, Mechanical Engineering
• David Hatchett, Chemistry

Collaborators

• Ning Li, LBE Project Leader, Los Alamos National Laboratory
• Stuart A. Maloy, Ph.D., AFCI Materials Team Leader, Los Alamos National Laboratory

Students

• Mohammad Hossain, PhD, Mechanical Engineering
  (PhD Thesis Not Available)
• Phani Gudipati, Masters, Mechanical Engineering
  MS Thesis
• Ramprashad Prabhakaran, Masters, Mechanical Engineering
  MS Thesis
• Sudheer Sama, Masters, Mechanical Engineering
  (MS Thesis Not Available)
• Venkataramakrishnan Selvaraj, Masters, Mechanical Engineering
  MS Thesis
• Nikita Agarwal, Undergraduate, Electrical Engineering
• Aaron Tippetts, Undergraduate, Mechanical Engineering