【摘 要】
：
Effect of the heat treatment, including solution treatment (ST) and aging treatment (AT), on the prior austenite grain (PAG) size, microstructure and mechanical
【出 处】
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Journal of Materials Science & Technology
论文部分内容阅读
Effect of the heat treatment, including solution treatment (ST) and aging treatment (AT), on the prior austenite grain (PAG) size, microstructure and mechanical properties of a precipitation hardening maraging stainless steel was investigated. The results indicate that the relations between PAG size and yield strength (σy) under both ST and AT conditions obey the Hall-Petch relationship. Furthermore, after ST at 1050℃for 1 h+cryogenic treated (CT) at -70℃for 8 h+AT at 535℃for 4 h, the tested steel showed its ultimate tensile strength (σb) andσy over 1900 MPa and 1750 MPa, respectively.
Effect of the heat treatment, including solution treatment (ST) and aging treatment (AT), on the prior austenite grain (PAG) size, microstructure and mechanical properties of a precipitation hardening maraging stainless steel was investigated. The results indicate that the relations between After ST at 1050 ° C for 1 h + cryogenic treated (CT) at -70 ° C for 8 h + AT at 535 ° C for 4 h, the tested steel showed its ultimate tensile strength (σb) and σy over 1900 MPa and 1750 MPa, respectively.
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