Loading...
Please wait, while we are loading the content...
Similar Documents
Weldability of high-toughness iron - 12 percent-nickel alloys with reactive metal additions of titanium, aluminum, or niobium
| Content Provider | Semantic Scholar |
|---|---|
| Author | Delvetian, J. H. Stephens, Joseph Rayner Witzke, Walter R. |
| Copyright Year | 1977 |
| Abstract | Three exceptionally high toughness Fe-12Ni alloys designed for cryogenic service were welded by using the gas tungsten arc welding process. Evaluation of their weldability included equivalent energy fracture toughness tests, transverse weld tensile tests at -196 and 25 C, and weld crack sensitivity tests. The Fe-12Ni-0.25Ti alloy proved extremely weldable for cryogenic applications, having weld and heat affected zone properties comparable to those of the wrought base alloy. The Fe-12Ni-0.5Al alloy had good weld properties only after the weld joint was heat treated. The Fe-12Ni-0.25Nb alloy was not considered weldable for cryogenic use because of its poor weld joint properties at -196 C and its susceptibility to hot cracking. Effects of gas tungsten arc welding on Fe-12Ni alloy sheets containing titanium, aluminum, or niobium additions were studied; the variables included fracture toughness, weld cooling rate, heat treatment, hot rolling, yield strength, tensile strength, elongation (percent), alloy content, interstitial content, and microstructure. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19770011305.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
