摘要
Byusingthermo-simulation,AugeranalysisandCharpyⅤimpacttestandwiththeobservationofthemicrostructuresinwhichcleavagecrackwasinitiated,themorphologyandtoughnessofthelocalbrittlezoneofC-MnandCr-Ni-Momultipassweldmetalshavebeeninvestigated.TheresultsindicatedthatthelocalbrittlezoneinC-MnweldmetalswithlowandhighMn％andCr-Ni-Moweldmetalsisdifferent.Withstatisticalanalysis,ithasbeenrevealedthatthemorethelocalbrittlezoneandthelowertheirtoughness,thelowerthetoughnessoftheentireweldmetals.Thealloyelementshaveanoticeableinflu-enceonthetoughnessofthelocalbrittlezone,therebychangingthetoughnessofweldmetals.
出版日期
1992年02月12日（中国期刊网平台首次上网日期，不代表论文的发表时间）
