Texture Study Across Thickness of API X70 Steel After Hot Deformation and Different Posttreatments

被引：4

作者：

Masoumi, M. ^{[1
]}

Herculano, L. F. G. ^{[1
]}

Almeida, A. A. ^{[1
]}

Beres, M. ^{[1
]}

De Abreu, H. F. G. ^{[1
]}

机构：

[1] Univ Fed Ceara, Dept Met & Mat Engn, Fortaleza, Ceara, Brazil

来源：

JOM | 2016年 / 68卷 / 01期

关键词：

STRESS-CORROSION CRACKING; HYDROGEN-INDUCED CRACKING; PIPELINE STEEL; PROPAGATION; ANISOTROPY;

D O I：

10.1007/s11837-015-1712-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present study, the texture heterogeneity across the thickness of API X70 steel subjected to hot deformation and different posttreatments was investigated. X-ray diffraction and electron backscattered diffraction were used to analyze crystallographic orientation and grain boundary distributions at the center and surface layers of specimens. The initial material was rolled at 1000 degrees C to 67% reduction; then one deformed sample was cooled in air, and the others were quenched in water and finally tempered at 350 degrees C and 700 degrees C for 1 h. The shear strain generated by friction between rolls and strip induces heterogeneity across thickness. The results showed that in the center layer, the (001)[(1) over bar(1) over bar 10] texture dominated in all specimens, whereas the {110}//ND component was developed at the surface layer. Furthermore, a local misorientation histogram showed that the surface layer was subjected to a higher degree of deformation in comparison with the center layer due to additional shear deformation.

引用

页码：401 / 409

页数：9

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