Cascading phase transformations in situ for the simulated coarse-grained heat-affected zone of P92 heat-resistant steel

被引：4

作者：

Liu, Haoxin ^{[1
,2
]}

Zhong, Ming ^{[1
,2
]}

Shen, Yang ^{[1
,2
]}

Wang, Zhanjun ^{[1
,2
]}

Basu, Somnath ^{[3
]}

Wang, Cong ^{[1
,2
]}

机构：

[1] Northeastern Univ, Key Lab Ecol Met Multimet Mineral, Minist Educ, Shenyang 110819, Peoples R China

[2] Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China

[3] Indian Inst Technol, Dept Met Engn & Mat Sci, Bombay, India

来源：

MATERIALS CHARACTERIZATION | 2023年 / 200卷

基金：

中国国家自然科学基金;

关键词：

Phase transformation; Coarse -grained heat -affected zone; Heat -resistant steel; Confocal scanning laser microscope; DELTA-FERRITE; LAVES PHASE; MICROSTRUCTURE; EVOLUTION; GROWTH; NUCLEATION; TOUGHNESS; BOUNDARY; STRENGTH; KINETICS;

D O I：

10.1016/j.matchar.2023.112864

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Salient phase transformations in the coarse-grained heat-affected zone of P92 heat-resistant steel have been documented by confocal scanning laser microscope. It has been revealed that consecutive transformations (delta -> gamma -> martensite) take place, and the final microstructure is composed of transformed martensites with retained delta-ferrites. It is further demonstrated that martensite laths grow at a wide rate spectrum ranging from 86 to 354 mu m/s. The fast cooling rate may not allow complete transformation of delta-ferrite to gamma-austenite as the equilibrium condition is far from attained.

引用

页数：6

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