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ASTM E963-95(2017)
Standard Practice for Electrolytic Extraction of Phases from Ni and Ni-Fe Base Superalloys Using a Hydrochloric-Methanol Electrolyte (Withdrawn 2018)
4 стр.
Отменен
Печатное изданиеЭлектронный (pdf)
81.12 $ (включая НДС 20%)
Разработчик:
Зарубежные/ASTM
ICS:
77.120.40 Nickel, chromium and their alloys / Никель, хром и их сплавы
Сборник (ASTM):
03.01 Metals -- Mechanical Testing; Elevated and Low-Temperature Tests; Metallography / Металлы - Механические испытания, Испытания при высоких и низких температурах, Металлография
Тематика:
Physical & Mechanical Testing
Описание
Причина отменыThis 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.

Formerly under the jurisdiction of Committee E04 on Metallography, this practice was withdrawn in May 2018. This standard is being withdrawn without replacement due to its limited use by industry.

Значение и использование

3.1 This practice can be used to extract carbides, borides, TCP and GCP phases, which can then be qualitatively or quantitatively analyzed by X-ray diffraction or microanalysis.2

3.2 Careful control of parameters is necessary for reproducible quantitative results. Within a given laboratory, such results can be obtained routinely; however, caution must be exercised when comparing quantitative results from different laboratories.3

3.3 Comparable qualitative results can be obtained routinely among different laboratories using this procedure.3

Область применения

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. (See 4.3.2.1 and 5.1.1.)

Note 1: Ni3 Ti (eta phase) has been found to be soluble in the electrolyte for some alloys.

FIG. 1 Schematic Diagram of Extraction Cell

 Schematic Diagram of Extraction Cell Schematic Diagram of Extraction Cell

1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Ключевые слова:
borides; carbides; electrolytic extraction; Gamma prime; GCP phases; superalloys; TCP phases;