摘要
１８Ｃｒ－２Ｍｏ钢较低的塑性原与Ｃ，Ｎ，Ｓ间隙原子存在所形成的短程障碍有关，某些间隙相大厚片和小片群沿｛１００｝面大量析出，使钢在０℃下易产生解理断裂解理断裂；加Ｎｂ，Ｚｒ，Ｖ，Ｍｎ不能改善钢的韧性。加Ｔｉ因只析出有球化趋势的间隙相，并降低钢中自由Ｃ，Ｎ，Ｓ原子含量，有利于提高钢的塑性。
The lower toughness of 18Cr-2Mo steel was related to the short-range obstruction formed due to ekisting C, N and S interstitial atoms in steel and precipitating thick lamellar and flaky phases along {100} plane, which caused cleavage fracture of steel at 0℃. Adding Nb, Zr, V and Mo has not been found to contribute to the toughness. Adding Ti caused spheroidal interstitial phases deposited and interstitial impurities decreased which contributed to the toughness of steel.
出处
《特殊钢》
北大核心
1994年第1期23-26,共4页
Special Steel
关键词
间隙相
不锈钢
脆性
合金元素
Toughness
Short-range Obstruction
Interstitial Compound
