...条马氏体(lath martensite) 低碳（low carbon）板条马氏体 位错马氏体 位错（亚结构） C%＞1.0% 针状马氏体(acicular martensite) 高碳(high carbon martensite)针状马 氏体 孪晶马氏体 孪晶（twin crystal;亚结构） ③性能：主要决定于M 中的含碳量，含碳越高...
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... needle crystal 针状结晶 needle type martensite 针状马氏体 negative adsorption 负吸附 ...
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针状回火马氏体 acicular tempered martensite
完全硬化区由细小针状马氏体、残余奥氏体和少量点状碳化物组成，过渡区由马氏体和回火索氏体（珠光体）组成；
The completely hardening region is composed of fine acicular martensites, residual austenites and a few dot-like carbonides and the transition region is made up of martensites and sorbites (pearlite).
结果表明，在连接杆焊缝附近的热影响区中存在大量针状马氏体组织，在低应力的作用下，导致材料发生脆性断裂。
The result shows that the fracture mode is low stress brittle fracture. The fracture is mainly caused by needle type martensite in the heat affected zone of the weld joint.
钢的组织主要由针状铁素体和马氏体两相组成。
Mainly its metallographic structure consists of acicular ferrite and martensite.
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