Effect of cooling rates on mechanical properties and microstructure of inconel alloys

No Kyeong Park; Ho Seong Lee; Young Suck Chai

doi:10.3740/MRSK.2007.17.10.555

Effect of cooling rates on mechanical properties and microstructure of inconel alloys

No Kyeong Park, Ho Seong Lee, Young Suck Chai

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The mechanical properties and microstructure of Inconel 690 and 600 alloys with various cooling rates were investigated. Optical microscopy and scanning electron microscopy observations indicated that in case of the cooling rate of 0.5°C/min, discontinuous carbides along the grain boundaries were formed and when the cooling rate was 10°C/min, continuous carbides were formed in Inconel 690 and 600 alloys. For the annealed Inconel. 690 alloy with high Cr content, a lot of annealing twins, which led the preferential growth of (111) planes, were observed. However, the annealed Inconel 600 alloy with low Cr content showed a few annealing twins and the preferential growth of (200) planes. Inconel 600 alloy had a larger value of ultimate tensile strength (UTS) than Inconel 690 alloy.

Original language	English
Pages (from-to)	555-559
Number of pages	5
Journal	Korean Journal of Materials Research
Volume	17
Issue number	10
DOIs	https://doi.org/10.3740/MRSK.2007.17.10.555
State	Published - Oct 2007

Keywords

Cooling rate
Heat treatment
Inconel alloy
Mechanical property
Microstructure
Steam generator tube

Access to Document

10.3740/MRSK.2007.17.10.555

Cite this

@article{fc8bcdcd76e64ecaae00d96cfd63b9d5,

title = "Effect of cooling rates on mechanical properties and microstructure of inconel alloys",

abstract = "The mechanical properties and microstructure of Inconel 690 and 600 alloys with various cooling rates were investigated. Optical microscopy and scanning electron microscopy observations indicated that in case of the cooling rate of 0.5°C/min, discontinuous carbides along the grain boundaries were formed and when the cooling rate was 10°C/min, continuous carbides were formed in Inconel 690 and 600 alloys. For the annealed Inconel. 690 alloy with high Cr content, a lot of annealing twins, which led the preferential growth of (111) planes, were observed. However, the annealed Inconel 600 alloy with low Cr content showed a few annealing twins and the preferential growth of (200) planes. Inconel 600 alloy had a larger value of ultimate tensile strength (UTS) than Inconel 690 alloy.",

keywords = "Cooling rate, Heat treatment, Inconel alloy, Mechanical property, Microstructure, Steam generator tube",

author = "Park, {No Kyeong} and Lee, {Ho Seong} and Chai, {Young Suck}",

year = "2007",

month = oct,

doi = "10.3740/MRSK.2007.17.10.555",

language = "English",

volume = "17",

pages = "555--559",

journal = "Korean Journal of Materials Research",

issn = "1225-0562",

publisher = "Korea Federation of Science and Technology",

number = "10",

}

TY - JOUR

T1 - Effect of cooling rates on mechanical properties and microstructure of inconel alloys

AU - Park, No Kyeong

AU - Lee, Ho Seong

AU - Chai, Young Suck

PY - 2007/10

Y1 - 2007/10

N2 - The mechanical properties and microstructure of Inconel 690 and 600 alloys with various cooling rates were investigated. Optical microscopy and scanning electron microscopy observations indicated that in case of the cooling rate of 0.5°C/min, discontinuous carbides along the grain boundaries were formed and when the cooling rate was 10°C/min, continuous carbides were formed in Inconel 690 and 600 alloys. For the annealed Inconel. 690 alloy with high Cr content, a lot of annealing twins, which led the preferential growth of (111) planes, were observed. However, the annealed Inconel 600 alloy with low Cr content showed a few annealing twins and the preferential growth of (200) planes. Inconel 600 alloy had a larger value of ultimate tensile strength (UTS) than Inconel 690 alloy.

AB - The mechanical properties and microstructure of Inconel 690 and 600 alloys with various cooling rates were investigated. Optical microscopy and scanning electron microscopy observations indicated that in case of the cooling rate of 0.5°C/min, discontinuous carbides along the grain boundaries were formed and when the cooling rate was 10°C/min, continuous carbides were formed in Inconel 690 and 600 alloys. For the annealed Inconel. 690 alloy with high Cr content, a lot of annealing twins, which led the preferential growth of (111) planes, were observed. However, the annealed Inconel 600 alloy with low Cr content showed a few annealing twins and the preferential growth of (200) planes. Inconel 600 alloy had a larger value of ultimate tensile strength (UTS) than Inconel 690 alloy.

KW - Cooling rate

KW - Heat treatment

KW - Inconel alloy

KW - Mechanical property

KW - Microstructure

KW - Steam generator tube

UR - http://www.scopus.com/inward/record.url?scp=35948997004&partnerID=8YFLogxK

U2 - 10.3740/MRSK.2007.17.10.555

DO - 10.3740/MRSK.2007.17.10.555

M3 - Article

AN - SCOPUS:35948997004

SN - 1225-0562

VL - 17

SP - 555

EP - 559

JO - Korean Journal of Materials Research

JF - Korean Journal of Materials Research

IS - 10

ER -

Effect of cooling rates on mechanical properties and microstructure of inconel alloys

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this