JP2005062173A - 第二相粒子を有する微細複相材料組織の映像化観察方法 - Google Patents
第二相粒子を有する微細複相材料組織の映像化観察方法 Download PDFInfo
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Abstract
【解決手段】表面高低差50nm以下の表面として、SEMまたはEBSP計測により映像化観察可能とする。
【選択図】なし
Description
「Ultrafine Grained Materials 」(The Minerals, Metals and Ma terials Society, 2000) p.247-254
、1μm以下の微細粒組織では、化学腐食によって導入された表面凹凸のために明瞭な組織像を得ることが難しい。特に、高強度化・高靱化を図るために析出物(第二相粒子)を分散・析出した微細複相材料では、析出物に母地組織が覆われるために微細結晶粒組織の映像化が困難である。この出願の発明は、このような従来技術の問題点を解消し、微細結晶粒に析出物が分散・析出した微細複相材料に対して、析出物の影響を受けることなく、結晶粒を明瞭かつ簡便に映像化観察することのできる、新しい技術手段を提供することを課題としている。
最適な研磨時間が存在する。たとえば、焼もどしマルテンサイト鋼やフェライト微細粒鋼を化学機械研磨処理する場合においては、10分では表面凹凸を消すことができないが、1時間では選択腐食された粒界に研磨粒子が入り込み、表面が白く濁って見える。表面の凹凸が消えて、平滑面が得られる最適時間は20分〜40分程度である。
実施例1として、階層構造を有する微細で複雑な中炭素鋼の焼もどしマルテンサイト組
織に対して、この出願の発明による組織の映像化方法を実施した。その詳細は以下のとおりである。
いないことがわかる。
化物粒子が、母地の結晶方位に依存して放出される背面電子散乱の検出器への入射を邪魔するために、EBSP計測が困難になっている。これに対して、化学機械研磨面のEBSP計測は、図14に示したとおり、試料全面の多くの領域で可能であり、EBSP計測には電解研磨面を用いるよりも化学機械研磨面を用いる方が適していることがわかる。また、EBSP計測では結晶方位差の角度を求めることができるので、ラスとブロックを同一視野で識別することが可能である。
実施例2では、図15の模式図に示すような組織構成が単純なフェライト微細粒組織に対して、この出願の発明を適用した。従って、実施例1の階層構造を有する複雑なマルテンサイト組織に適用する以上に、この出願の発明による結晶粒映像化の効果を明確に示すことができる。なお、機械研磨はエメリー紙による粗研磨後、粒子径が1μmのダイヤモンド粒子によって行った。化学腐食は5%ナイタールで10秒間行った。電解研磨は8vol.%過塩素酸、10vol.%ブトキシエタノール、70vol.%エタノール、12vol.%蒸留水の溶液により行った。化学機械研磨は二酸化けい素を水に含有させた化学研磨液により行った。
Claims (2)
- 第二相粒子を有する微細複相材料において、表面高低差50nm以下の表面として、走査型電子顕微鏡(SEM)または背面電子散乱パターン(EBSP)計測により組織を映像化観察可能とすることを特徴とする第二相粒子を有する微細複相材料組織の映像化観察方法。
- 化学研磨と機械研磨とを同時に行って表面高低差50nm以下とする請求項1の方法。
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| JP2005062173A true JP2005062173A (ja) | 2005-03-10 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007057240A (ja) * | 2005-08-22 | 2007-03-08 | Ishikawajima Harima Heavy Ind Co Ltd | 破壊原因推定装置及び破壊原因推定方法 |
| JP2007248390A (ja) * | 2006-03-17 | 2007-09-27 | Ihi Corp | 破壊寿命評価装置 |
| JP2007315848A (ja) * | 2006-05-24 | 2007-12-06 | Nippon Steel Corp | フェライト鋼板の変形組織の評価方法 |
| JP2010197269A (ja) * | 2009-02-26 | 2010-09-09 | Kyocera Corp | 試料観察方法 |
| JP2013148580A (ja) * | 2011-12-21 | 2013-08-01 | Jfe Steel Corp | 試料観察方法 |
| JP2013167565A (ja) * | 2012-02-16 | 2013-08-29 | Nippon Steel & Sumitomo Metal | 薄片試料作製装置及び薄片試料作製方法 |
| JP2016050330A (ja) * | 2014-08-29 | 2016-04-11 | 日産自動車株式会社 | 高強度ボルト用鋼及び高強度ボルト |
| CN106524957A (zh) * | 2016-09-22 | 2017-03-22 | 武汉钢铁股份有限公司 | 珠光体团尺寸的测定方法 |
| WO2017149785A1 (en) * | 2016-03-02 | 2017-09-08 | Jfe Steel Corporation | Method of visualizing austenite phase in multiphase steel and multiphase steel specimen for microstructure observation |
| CN107290379A (zh) * | 2017-06-23 | 2017-10-24 | 西安热工研究院有限公司 | 一种s30432锅炉管中马氏体组织的定量分析方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1020044A (ja) * | 1996-07-09 | 1998-01-23 | Kagaku Gijutsu Shinko Jigyodan | 電子スピン偏極度の計測方法及びその装置 |
| JPH10206355A (ja) * | 1997-01-17 | 1998-08-07 | Ishikawajima Harima Heavy Ind Co Ltd | 金属の疲労損傷度の評価法 |
| JP2000310585A (ja) * | 1999-04-27 | 2000-11-07 | Nippon Steel Corp | 透過型電子顕微鏡観察用薄膜試料作製方法 |
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2004
- 2004-07-28 JP JP2004219684A patent/JP4565142B2/ja not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1020044A (ja) * | 1996-07-09 | 1998-01-23 | Kagaku Gijutsu Shinko Jigyodan | 電子スピン偏極度の計測方法及びその装置 |
| JPH10206355A (ja) * | 1997-01-17 | 1998-08-07 | Ishikawajima Harima Heavy Ind Co Ltd | 金属の疲労損傷度の評価法 |
| JP2000310585A (ja) * | 1999-04-27 | 2000-11-07 | Nippon Steel Corp | 透過型電子顕微鏡観察用薄膜試料作製方法 |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007057240A (ja) * | 2005-08-22 | 2007-03-08 | Ishikawajima Harima Heavy Ind Co Ltd | 破壊原因推定装置及び破壊原因推定方法 |
| JP2007248390A (ja) * | 2006-03-17 | 2007-09-27 | Ihi Corp | 破壊寿命評価装置 |
| JP2007315848A (ja) * | 2006-05-24 | 2007-12-06 | Nippon Steel Corp | フェライト鋼板の変形組織の評価方法 |
| JP2010197269A (ja) * | 2009-02-26 | 2010-09-09 | Kyocera Corp | 試料観察方法 |
| JP2013148580A (ja) * | 2011-12-21 | 2013-08-01 | Jfe Steel Corp | 試料観察方法 |
| JP2013167565A (ja) * | 2012-02-16 | 2013-08-29 | Nippon Steel & Sumitomo Metal | 薄片試料作製装置及び薄片試料作製方法 |
| JP2016050330A (ja) * | 2014-08-29 | 2016-04-11 | 日産自動車株式会社 | 高強度ボルト用鋼及び高強度ボルト |
| WO2017149785A1 (en) * | 2016-03-02 | 2017-09-08 | Jfe Steel Corporation | Method of visualizing austenite phase in multiphase steel and multiphase steel specimen for microstructure observation |
| JP6308326B1 (ja) * | 2016-03-02 | 2018-04-11 | Jfeスチール株式会社 | 複相鋼中のオーステナイト相の可視化方法及び組織観察用複相鋼片 |
| JP2018513347A (ja) * | 2016-03-02 | 2018-05-24 | Jfeスチール株式会社 | 複相鋼中のオーステナイト相の可視化方法及び組織観察用複相鋼片 |
| CN106524957A (zh) * | 2016-09-22 | 2017-03-22 | 武汉钢铁股份有限公司 | 珠光体团尺寸的测定方法 |
| CN107290379A (zh) * | 2017-06-23 | 2017-10-24 | 西安热工研究院有限公司 | 一种s30432锅炉管中马氏体组织的定量分析方法 |
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