夹杂物对铁素体电厂钢蠕变寿命和断裂延展性退化的影响

IF 1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials at High Temperatures Pub Date : 2023-02-21 DOI:10.1080/09603409.2023.2175562

F. Abe

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引用次数: 0

摘要

研究了BN、AlN和MnS颗粒对9 ~ 12Cr马氏体钢和1Cr贝氏体钢在550 ~ 650℃时蠕变寿命和断裂延性退化的影响。在1100℃左右的正火过程中，BN颗粒在Gr.92和Gr.122中形成。BN颗粒与蠕变寿命的退化无关。在12Cr-1Mo-1 W-0.3 V钢蠕变过程中，AlN颗粒在高al热中析出，使溶解氮和细氮化物减少，有利于蠕变强度的提高，降低了蠕变寿命。MnS颗粒与1Cr-1Mo-0.25 V钢蠕变寿命的降低无关。BN、AlN和MnS颗粒通过加速颗粒与合金基体界面处蠕变空洞的形成而导致钢的还原率下降。

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Role of inclusions on degradation in creep life and rupture ductility of ferritic power plant steels

ABSTRACT The role of BN, AlN and MnS particles on the degradation in creep life and rupture ductility has been investigated for 9 to 12Cr martensitic steels and 1Cr bainitic steel mainly at 550 to 650 oC. The BN particles form in Gr.92 and Gr.122 during normalising at around 1100 oC. The BN particles have nothing to do with the degradation in creep life. The AlN particles precipitate in the high-Al heats of 12Cr-1Mo-1 W-0.3 V steel during creep, reducing dissolved nitrogen and fine nitrides beneficial for the creep strength and degrading the creep life. The MnS particles have nothing to do with the degradation in creep life of 1Cr-1Mo-0.25 V steel. The BN, AlN and MnS particles are responsible for the degradation in reduction of area of the steels by accelerating the formation of creep voids at interfaces between the particles and alloy matrix.

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来源期刊

Materials at High Temperatures 工程技术-材料科学：综合

CiteScore

1.90

自引率

15.40%

发文量

审稿时长

>12 weeks

期刊介绍： Materials at High Temperatures welcomes contributions relating to high temperature applications in the energy generation, aerospace, chemical and process industries. The effects of high temperatures and extreme environments on the corrosion and oxidation, fatigue, creep, strength and wear of metallic alloys, ceramics, intermetallics, and refractory and composite materials relative to these industries are covered. Papers on the modelling of behaviour and life prediction are also welcome, provided these are validated by experimental data and explicitly linked to actual or potential applications. Contributions addressing the needs of designers and engineers (e.g. standards and codes of practice) relative to the areas of interest of this journal also fall within the scope. The term ''high temperatures'' refers to the subsequent temperatures of application and not, for example, to those of processing itself. Materials at High Temperatures publishes regular thematic issues on topics of current interest. Proposals for issues are welcomed; please contact one of the Editors with details.