EFFECT OF BORON ON THE GRAIN-BOUNDARY SEGREGATION OF PHOSPHORUS AND INTERGRANULAR FRACTURE IN HIGH-PURITY FE-0.2 PCT P-B ALLOYS

被引：52

作者：

LIU, CM ^{[1
]}

NAGOYA, T ^{[1
]}

ABIKO, K ^{[1
]}

KIMURA, H ^{[1
]}

机构：

[1] NISSHIN STEEL CO LTD,NEW MAT RES LABS,ICHIKAWA 27201,JAPAN

来源：

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1992年 / 23卷 / 01期

关键词：

D O I：

10.1007/BF02660870

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of boron on the grain boundary segregation of phosphorus in a high-purity Fe-0.2 pct P alloy has been investigated by Auger electron spectroscopy (AFS). The segregation of phosphorus decreases markedly with the segregation of boron; phosphorus atoms are replaced by boron atoms at grain boundaries. The free energy of segregation of boron at 1073 K is determined to be 100 kJ/mol. The effect of boron on the phosphorus-induced intergranular fracture (IGF) has been examined with impact testing, and the fractography has been studied with scanning electron microscopy (SEM). Addition of 12.5 wt. ppm boron completely prevents the IGF induced by the segregation of phosphorus and decreases the ductile-brittle transition temperature (DBTT) by about 170 K when quenched from 1073 K. The suppression of the IGF due to the addition of boron is caused by two mechanisms. One is the increased grain boundary cohesion of iron caused by the segregated boron as its inherent effect. The other is the decrease in the segregation of phosphorus caused by the segregation of boron. The former has been shown to be more effective than the latter in suppressing the IGF.

引用

页码：263 / 269

页数：7

共 18 条

[1] PREVENTION OF THE INTERGRANULAR FRACTURE BY ADDITION OF SILICON AND ALUMINUM TO A HIGH-PURITY FE-0.2 PCT P-ALLOY WITH A TRACE OF BORON
LIU, CM
ABIKO, K
KIMURA, H
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1992, 23 (05): : 1515 - 1519
[2] Effect of carbon on grain boundary segregation of phosphorus and phosphorus-induced intergranular fracture in high purity iron with phosphorus
Wang, YN
Liu, CM
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL, 2003, 10 (01) : 28 - 32
[3] Effect of Carbon on Grain Boundary Segregation of Phosphorus and Phosphorus-Induced Intergranular Fracture in High Purity Iron with Phosphorus
WANG Ya-nan
LIU Chun-ming
JournalofIronandSteelResearch(International), 2003, 10 (01) : 28 - 32
[4] THE EFFECT OF ALLOYING ELEMENTS ON THE GRAIN-BOUNDARY SEGREGATION OF PHOSPHORUS IN IRON AND THE INTERGRANULAR CORROSION OF THE FE-P SYSTEM
WEI, W
GRABKE, HJ
CORROSION SCIENCE, 1986, 26 (03) : 223 - 236
[5] INFLUENCES OF P-C INTERACTIONS ON THE GRAIN-BOUNDARY SEGREGATION OF P IN HIGH-PURITY IRONS
INAGAKI, H
TRANSACTIONS OF THE IRON AND STEEL INSTITUTE OF JAPAN, 1988, 28 (07) : 597 - 597
[6] GRAIN-BOUNDARY SEGREGATION OF PHOSPHORUS IN FE-NB-P AND FE-NB-C-P ALLOYS
MOLLER, R
GRABKE, HJ
SCRIPTA METALLURGICA, 1984, 18 (05): : 527 - 530
[7] Effect of trace of boron on grain boundary segregation of sulfur and sulfur-induced intergranular fracture in high purity iron with sulfur
Liu, Chunming
Zhou, Yandao
Abiko, Kenji
Kimura, Hiroshi
Dongbei Daxue Xuebao/Journal of Northeastern University, 20 (01): : 57 - 60
[8] EFFECT OF TITANIUM ON THE GRAIN-BOUNDARY SEGREGATION OF PHOSPHORUS IN FE-TI-P AND FE-TI-C-P ALLOYS AND ON THE EMBRITTLEMENT OF STEELS
ERHART, H
GRABKE, HJ
MOLLER, R
ARCHIV FUR DAS EISENHUTTENWESEN, 1983, 54 (07): : 285 - 289
[9] ATOMISTIC STUDIES OF GRAIN-BOUNDARY SEGREGATION IN FE-P AND FE-B ALLOYS .2. ELECTRONIC-STRUCTURE AND INTERGRANULAR EMBRITTLEMENT
HASHIMOTO, M
ISHIDA, Y
WAKAYAMA, S
YAMAMOTO, R
DOYAMA, M
FUJIWARA, T
ACTA METALLURGICA, 1984, 32 (01): : 13 - 20
[10] ROLE OF CHROMIUM IN THE INTERGRANULAR FRACTURE OF HIGH-PURITY FE-P-CR ALLOYS WITH SMALL AMOUNTS OF CARBON
LIU, CM
ABIKO, K
TANINO, P
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1994, 176 (1-2): : 363 - 369

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