Grain-boundary contamination and ductility loss in boron-doped Ni 3 Al

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INTRODUCTION

T H E ductility of Ni3AI alloys at elevated temperatures is greatly affected by test environments, such as vacuum and air, as well as vacuum quality. H 41 Our previous work cSl revealed that the ductility of Ni-23A1-0.5Hf0.2B (at. pct),* tensile tested at 1033 K under very care*All compositions are reported in atomic percent.

fully controlled vacuum (

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