Record Details

Hardness and Microstructure of Binary and Ternary Nitinol Compounds
NTRS Full-Text: Click to View  [PDF Size: 11.3 MB]
Author and Affiliation:
Stanford, Malcolm K.(NASA Glenn Research Center, Cleveland, OH United States)
Abstract: The hardness and microstructure of twenty-six binary and ternary Nitinol (nickel titanium, nickel titanium hafnium, nickel titanium zirconium and nickel titanium tantalum) compounds were studied. A small (50g) ingot of each compound was produced by vacuum arc remelting. Each ingot was homogenized in vacuum for 48 hr followed by furnace cooling. Specimens from the ingots were then heat treated at 800, 900, 1000 or 1100 degree C for 2 hr followed by water quenching. The hardness and microstructure of each specimen was compared to the baseline material (55-Nitinol, 55 at.% nickel - 45 at.% titanium, after heat treatment at 900 degC). The results show that eleven of the studied compounds had higher hardness values than the baseline material. Moreover, twelve of the studied compounds had measured hardness values greater 600HV at heat treatments from 800 to 900 degree C.
Publication Date: Jan 01, 2016
Document ID:
20160001689
(Acquired Feb 09, 2016)
Subject Category: METALS AND METALLIC MATERIALS; ASTRONAUTICS (GENERAL)
Report/Patent Number: NASA/TM-2016-218946, E-19191, GRC-E-DAA-TN27159
Document Type: Technical Report
Contract/Grant/Task Num: WBS 109492.02.03.02.01.02
Financial Sponsor: NASA Glenn Research Center; Cleveland, OH United States
Organization Source: NASA Glenn Research Center; Cleveland, OH United States
Description: 46p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: HARDNESS; MICROSTRUCTURE; BINARY SYSTEMS (MATERIALS); NITINOL ALLOYS; HEAT TREATMENT; IMAGE ANALYSIS; AEROSPACE ENGINEERING; INGOTS; VICKERS HARDNESS; TEMPER (METALLURGY)
Other Descriptors: INTERMETALLICS; VICKERS HARDNESS; PHOTOMICROGRAPHY; METALLOGRAPHY
› Back to Top
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed
Find Similar Records
 
NASA Logo, External Link

NASA Official: Gerald Steeman

Sponsored By: NASA Scientific and Technical Information Program

Site Curator: STI Support Services

Last Modified: February 09, 2016

Privacy Policy & Important Notices Disclaimers, Copyright, Terms of Use Freedom of Information Act USA.gov NASA.gov NASA OCIO Free Adobe PDF Reader Free MS Word Viewer