1) widmanstatten
魏氏组织(widmanstatten structure)
2) Structure program
Structure程序
1.
The Structure program,based on model clustering method,was used to infer the genetic structure of nine indigenous chicken breeds,assign individuals to populations,and identify migrants and admixed individuals using 16 microsatellite markers.
以16个中度或高度多态性微卫星标记,运用基于模型分类法的Structure程序推断9个地方鸡品种群体遗传结构,构建聚类图分析相互间亲缘关系,并鉴定群体中迁移个体和具有复杂遗传基础个体的分布。
3) widmanstatten microstructure
魏氏组织
1.
Study on constitutive relationship for TC11 titanium alloy with thick laths widmanstatten microstructures deformed in two phase field;
粗片状魏氏组织TC11钛合金两相区本构关系研究
2.
The stress relaxation behavior of Ti-6Al-4V alloy with widmanstatten microstructure at 200℃, 400℃ and 600℃ were investigated, and microstructures before and after stress relaxation were observed by TEM.
利用弯曲应力松弛方法研究了魏氏组织Ti-6Al-4V合金200℃,400℃和600℃时的应力松弛行为,并利用TEM研究了应力松弛前后微观组织变化;宏观热力学参数结合微观组织观察初步探讨应力松弛机理。
4) widmanstatten structure
魏氏组织
1.
By comparing the ribbed bars with brittle fractures to the qualified rebars,it has been found that the widmanstatten structure,the rolling defects and the high inclusion are the major causes.
结果表明,魏氏组织较多、轧制缺陷及夹杂物过多是造成脆断的主要原因,并提出了相应的解决措施。
2.
The results of metallographical analysis of cracks in welding seams,show that widmanstatten structure is usually unavoidable in the welding process; however some meassures should be paid to welding failures can be taken to weliminate or minimize its influence,and attention about the easily neglected factor, that due to environment temperature change.
对焊接接头处出现的裂纹进行了金相分析,表明该部位在焊接过程中出现的魏氏组织在常规条件下是不可避免的,但是通过一些补救措施可以消除它的影响或将其影响降至最低程度,提出了环境温度的差异是造成焊接失败的因素。
3.
The results show that the appearance of Widmanstatten structure,upper bainite and martensite in the structure of 20MnSi HRB is the main cause making the yield point disappear.
结果表明 :2 0 Mn Si热轧带肋钢筋中出现的魏氏组织、上贝氏体及马氏体组织是使屈服点消失的主要原因。
5) crystallographic shear
切变结构(shear structure)
6) layer structure
片状结构(sheet structure)
补充资料:魏氏组织(widmanstatten structure)
分子式:
CAS号:
性质:又称魏氏组织(widmanstatten structure)。钢中相形态之一。通常指先共析铁素体或渗碳体加珠光体的组织。呈片状或针状。对亚共析钢,魏氏体呈片状、羽毛状、三角形或几种形态混合的铁素体构成,对过共析钢,魏氏体呈针状或杆状的渗碳体组成。一般低、中碳钢,当冷却速度适当时,都可能产生魏氏体。钢中出现魏氏体会引起钢的强度、韧性与塑性的降低,使韧脆转化温度升高。常采用退火或正火的方法细化晶粒,消除魏氏体。
CAS号:
性质:又称魏氏组织(widmanstatten structure)。钢中相形态之一。通常指先共析铁素体或渗碳体加珠光体的组织。呈片状或针状。对亚共析钢,魏氏体呈片状、羽毛状、三角形或几种形态混合的铁素体构成,对过共析钢,魏氏体呈针状或杆状的渗碳体组成。一般低、中碳钢,当冷却速度适当时,都可能产生魏氏体。钢中出现魏氏体会引起钢的强度、韧性与塑性的降低,使韧脆转化温度升高。常采用退火或正火的方法细化晶粒,消除魏氏体。
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