Microcosmic Metallographic Analysis

Evaluation of Non-metallic Inclusions	Macroscopic Metallographic Analysis
Metal Average Grain Size Evaluation	X-ray Diffraction（XRD）
Microcosmic Metallographic Analysis	Carburizing/Nitriding/Hardening Layer

Purposes:

Mainly used for inspection of metal material microscopic organization composition and judgment of heat treatment quality.

Applications:

Cast iron, steel, copper alloy, aluminum alloy, magnesium alloy, nickel alloy, titanium alloy, etc.

Tested Flow:

Sampling→Cleaning→Inlaying→Grinding→Polishing→Etching→Observeing

Reference Standard:

Steel:

GB/T 13298-1991 Metal—Inspection method of microstrcture

GB/T 13299-1991 Steel—Determination of microstrucyure

GB/T 9441-2009 Metallographic test for spheroidal graphite cast iron

GB/T 7216-2009 Metallographic test for gray cast iron

GB/T 1299-2014 Tool and mould steels

GB/T 13320-2007 Metellographic grading atlas and assessing method for steel die forgings

GB/T 11354-2005 Determination of nitrided case depth and metallographic microstructure examination for steel and iron parts

GB/T 13305-2008 Micrographic method for determining area content of the α-phases in stainless steels

GB/T 4334-2008 Corrosion of metals and alloys—Test mthods for intergranular corrosion of stainless steels

GB/T 14979-1994 Eutectic carbide of steel—Micrographic method using standard diagrams

JB/T 1255-2001 Specification for heat-treatment of rolling bearing parts made from high carbon chromium steel

JB/T 9204-2008 Metallographic examination of induction hardened steel parts

JB/T 7710-2007 Determination of microstructure for the thin layer carbonitriding or carburizing elements

JB/T 7713-2007 Metallographic examination method of high-carbon high-alloy cold-work tool steel

Copper and copper alloys:

QJ 2337-1992 Microstructure analysis of Be-Bronze

Magnesium and magnesium alloys:

GB/T 4296-2004 Inspection Method for Microstructure of Wrought Magnesium Alloy

Aluminum and aluminum alloys:

JB/T 7946.1-1999 Metallograph of cast aluminium alloys Cast aluminum-silicon alloys —Modification

JB/T 7946.2-1999 Metallograph of cast aluminium alloys Cast aluminium-silicon alloys —Burning

JB/T 7946.3-1999 Metallograph of cast aluminium alloys Cast aluminium-silicon alloys —Pinhole

JB/T 7946.4-1999 Metallograph of cast aluminium alloys Cast aluminium-silicon alloys —Grain size

Classic Photos:


Microstructure of 45 steel	Microstructure of alloy tool steel

Intergranular corrosion of 314 stainless steel	Microstructure of duplex stainless steel

Microstructure of aluminum alloys	Microstructure of copper alloys