NDLI: Effect of martensite-austenite constituent on fracture behavior of weld zone of HSLA steel.

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Effect of martensite-austenite constituent on fracture behavior of weld zone of HSLA steel.

Content Provider	Semantic Scholar
Author	Kikuta, Yoneo Araki, Takao Yoneda, Masafumi Jian, Cehn
Copyright Year	1985
Abstract	Fracture behavior of the weld zone of 80kg/mm2 class HSLA steel has been investigated by means of tensile test, Charpy impact test and three point bending test. The results obtained gave convincible evidences that showed the following important role played by the martensite-austenite (M-A) constituent on the initiation and propagation processes of cracks.For ductile fracture, cracks were initiated by cracking flaky M-A constituent or debonding blocky M-A constituent from ferrite matrix. Then cracks expanded to voids and developed to deep holes. The main crack was formed by coalescence of deep holes by internal necking and led to fracture of specimen with a ductile deep dimple fracture surface.On the other hand, for brittle fracture, cracks nucleated at the interface of blocky M-A constituent and ferrite matrix. Then the crack propagated into the specimen, resulting in catastrophic fracture with a brittle river pattern surface.
Starting Page	638
Ending Page	642
Page Count	5
File Format	PDF HTM / HTML
DOI	10.2472/jsms.34.638
Volume Number	34
Alternate Webpage(s)	https://www.jstage.jst.go.jp/article/jsms1963/34/381/34_381_638/_pdf
Alternate Webpage(s)	https://doi.org/10.2472/jsms.34.638
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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