M00002508
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GMW16436 3rd Edition, April 2020 Dendrite Arm Spacing Measurement of Aluminum Castings
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Availability date: 07/27/2021
Description / Abstract:
Purpose.
This standard covers the process for determining and reporting the microstructural fineness of aluminum castings. Two (2) methods are presented in this standard:
• Method A (Appendix A).
Secondary Dendrite Arm Spacing (SDAS) as measured via the linear intercept method.
• Method B (Appendix B).
Mean Linear Dendrite Spacing (MLDS) as measured via an image analysis routine.