GB/T 14999.7-2010 Active
GB/T 14999.7-2010 Test methods for grain sizes,primary dendrite spacing and microshrinkage of superalloy castings
Abstract
1.1 This standard specifies the determination methods and result presentation methods for the macroscopic and microscopic average grain size of high-temperature alloy castings, the grain size of columnar crystals, the average spacing of columnar crystals and single-crystal primary dendrites, and the determination of microscopic porosity.
1.2 This standard is applicable to the determination of grain size in ordinary precision castings and directionally solidified columnar crystal castings; the determination of the spacing of primary dendrites in directionally solidified columnar crystal and single-crystal castings; and the determination of microscopic porosity in ordinary precision castings and directionally solidified columnar crystal and single-crystal castings.
1.3 This standard is only a recommended determination method and does not stipulate the acceptable quality level range for acceptance testing of high-temperature alloy castings.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 14999.7-2010 |
| CCS | High-temperature alloys |
| ICS | Other steel products |
| Implement Date | 2011-09-01 |