ASTM-E963 › Historical Revision Information
Standard Practice for Electrolytic Extraction of Phases from Ni and Ni-Fe Base Superalloys Using a Hydrochloric-Methanol Electrolyte
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Scope
1.1 This practice covers a procedure for the isolation of carbides, borides, TCP (topologically close-packed), and GCP (geometrically close-packed) phases (Note 1) in nickel and nickel-iron base gamma prime strengthened alloys. Contamination of the extracted residue by coarse matrix (gamma) or gamma prime particles, or both, reflects the condition of the alloy rather than the techniques mentioned in this procedure.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. (See 3.3.2.1 and 4.1.1.)
Note 1--Ni3 Ti (eta phase) has been found to be soluble in the electrolyte for some alloys.
Keywords
borides; carbides; electrolytic extraction; Gamma prime; GCP phases; superalloys; TCP phases
To find similar documents by ASTM Volume:
03.01 (Metals -- Mechanical Testing; Elevated and Low-Temperature Tests; Metallography)
To find similar documents by classification:
77.120.40 (Nickel, chromium and their alloys)
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Document Number
ASTM-E963-95(2004)e1
Revision Level
1995 R04(E1) EDITION
Status
Superseded
Modification Type
Revision
Publication Date
Nov. 1, 2004
Document Type
Practice
Page Count
4 pages
Committee Number
E04.11