1. IntroductionThe deformationandfr

1. Introduction
The deformationandfracturebehaviorsofstructuralmaterials
arealwaysthemainaspectsforitsperformance.Preliminary
researchtorevealthedeformationandfracturemechanismgen-
erallyaccomplishedviaacomprehensiveunderstandingofmacro-
scopical deformationfeatures,fractographsandsomestatic
mechanical propertiessuchastensilestrengthandfracturetough-
ness [1–5]. Withthedevelopmentofmaterialsscienceand
electron microscopy,areal-timeandhighresolutionobservation
of thedeformationandfractureprocessinmaterials,especiallyfor
them withinmicro-nanoscales,becomesavailableandincreas-
ingly receiveswidespreadattentions [6]. Inthepastfewdecades,
by meansofinsitustrainingtransmissionelectronmicroscopy
(TEM) methodsandrelatedcomputersimulations,manyresearch-
ers focusedonthedeformationandfracturebehaviorsofpure
metals [7–14], metallicalloys [7,15–17] andnanomaterials(includ-
ing nanocrystalline [18,19], nanotubes [20], nanowires [21] and
micro- ornanopillars [22,23]) torevealcharacteristicsand
mechanisms ofplasticdeformation,dislocationactivities,crack
propagationaswellasthecrack-tipsubstructures.Insitustraining
TEM methods,whichdirectly,continuouslyandmicroscopically
show thedynamicalprocessesduringdeformationandfracture,
can effectivelyavoidtheprobablemisunderstandingsinducedby
static observationandtheoreticalspeculation [6], thusareofgreat
importance tofullyunderstandthedeformationandfracture
behaviorsofvariousmaterialsatmicro-nanooratomiclevels.

ผลลัพธ์ (ไทย) 2:

1. บทนำ deformationfeatures, fractographsandsomestatic propertiessuchastensilestrengthandfracturetough- กลness [1-5] Withthedevelopmentofmaterialsscienceand กล้องจุลทรรศน์อิเล็กตรอนขนหัวลุก-timeandhighresolutionobservation ของ thedeformationandfractureprocessinmaterials, especiallyfor พวกเขา withinmicro-nanoscales, becomesavailableandincreas- ingly receiveswidespreadattentions [6] Inthepastfewdecades, โดย meansofinsitustrainingtransmissionelectronmicroscopy (TEM) methodsandrelatedcomputersimulations, manyresearch- ERS focusedonthedeformationandfracturebehaviorsofpure โลหะ [7-14] metallicalloys [7,15-17] andnanomaterials (รวมทั้งในวันnanocrystalline [18,19] ท่อนาโน [20], nanowires [21] และornanopillars ไมโคร [22,23]) torevealcharacteristicsand กลไก วิธีการ whichdirectly, continuouslyandmicroscopically แสดง thedynamicalprocessesduringdeformationandfracture, สามารถ effectivelyavoidtheprobablemisunderstandingsinducedby observationandtheoreticalspeculation คง [6], thusareofgreat สำคัญ tofullyunderstandthedeformationandfracture behaviorsofvariousmaterialsatmicro-nanooratomiclevels

ผลลัพธ์ (ไทย) 3:

1 . แนะนำ deformationandfracturebehaviorsofstructuralmaterials

-

arealwaysthemainaspectsforitsperformance . เบื้องต้น researchtorevealthedeformationandfracturemechanismgen erallyaccomplishedviaacomprehensiveunderstandingofmacro -
scopical deformationfeatures fractographsandsomestatic
-
, เครื่องกล propertiessuchastensilestrengthandfracturetough 1 –เนส [ 5 ]กล้องจุลทรรศน์อิเล็กตรอน withthedevelopmentofmaterialsscienceand

timeandhighresolutionobservation ของ thedeformationandfractureprocessinmaterials , กระทรวงศึกษาธิการ , พวกเขา withinmicro nanoscales อย่างมั่นคง
,
becomesavailableandincreas - ingly receiveswidespreadattentions [ 6 ] inthepastfewdecades
,
( TEM ) โดย meansofinsitustrainingtransmissionelectronmicroscopy methodsandrelatedcomputersimulations manyresearch -
,ERS focusedonthedeformationandfracturebehaviorsofpure
โลหะ [ 7 – 14 ] , [ 17 ] metallicalloys 7,15 – andnanomaterials ( includ ไอเอ็นจี nanocrystalline 18,19 -
[ ] , นาโน [ 20 ] , [ 21 ] นาโนและไมโคร - ornanopillars 22,23
[ ]
) torevealcharacteristicsand กลไก ofplasticdeformation dislocationactivities , ร้าว ,
propagationaswellasthecrack tipsubstructures . insitustraining
วิธี whichdirectly tem ,continuouslyandmicroscopically

สามารถ thedynamicalprocessesduringdeformationandfracture แสดง , effectivelyavoidtheprobablemisunderstandingsinducedby
observationandtheoreticalspeculation สถิต [ 6 ] , thusareofgreat


behaviorsofvariousmaterialsatmicro ความสำคัญ tofullyunderstandthedeformationandfracture nanooratomiclevels .